Chronology X: Timeline - Up to February 1969

Because of ongoing storylines, I decided to postpone updating the timeline for a few months. It's likely that I'll tackle it this way going forward, finding story breaks that are close to the end of a year rather than doing an update every December.

Below are links to my coverage of all the issues that I'm adding to this update. Check out the links for the various reasons I've placed things the way I have.

A COMPLETE CHRONOLOGY OF THE X-MEN (as of February 1969)

There are a lot of stories in 1968 that are significant to the Silver Age, if not to X-Men history as a whole: the "death" of Professor X, the return of Magneto, and the first appearances of Lorna Dane and Mesmero. In terms of flashbacks it's mostly about the origin back-ups, as we round out the origin of Cyclops and add those of Iceman and Beast.

XY stands for "X-Men Year", with XY 0 being the year in which X-Men (1963) #1 occurs. Positive numbers indicate years after that, and negative numbers years before. Events that are tied to the sliding timescale will use the XY system, while those that aren't will use actual years. New entries and updates to the timeline are marked in red.

EONS AGO

X-MEN (1963) #21 flashback: Lucifer's alien people invent the Dominus computer to enslave planets.

ABOUT 5 BILLION YEARS AGO

Lucifer's alien people begin enslaving worlds with the Dominus computer.

COUNTLESS YEARS AGO

Lucifer begins enslaving planets for his people.

30,000 to 10,000 BC

X-MEN (1963) #41 (1st story) flashback: A vast subterranean empire develops, fighting unending wars against their enemies. They are ignorant of the surface world, and the humans above are ignorant of them, except for the moments when their ceaseless warfare causes volcanic eruptions. (This empire is the one that will later be ruled over by Prince Gor-Tok, also known as the villain Grotesk.)

circa 500 AD

The Pendant of Kukulcan is created by the Mayans.

6th CENTURY AD

The original Black Knight has many adventures, protecting King Arthur from the ambitions of his evil nephew Modred. (Originally depicted in Black Knight (1955) #1-5, and mentioned in Avengers (1963) #48.)
A mutant with great powers of hypnotism impersonates Merlin the Magician in the court of King Arthur. After a time he decides to put himself into suspended animation to survive the coming centuries.
The former Roman Emperor known as Tyrannus is banished from the surface world by Merlin. (I assume this is the real Merlin, not the fake one who becomes the Warlock/Maha Yogi.)

circa 900 AD

The power of Kukulcan is misused, creating a volcanic eruption that engulfs a city. After this, the pendant is broken into two pieces. This is the last time Kukulcan manifests on Earth for 1,000 years. (The date of the volcanic eruption is conjecture, as is using that event to explain why the pendant was broken. It all ties together very well with the date for when Kukulcan last walked the Earth, though, and it also coincides with the beginning of the decline of Mayan civilisation.)

circa 999 AD

The evil deity Cyttorak is driven from Earth. He leaves behind the curse of the Juggernaut in his temple, in the form of a ruby, and sets his demonic servant Xorak to guard it. The temple will be spoken of in legend for centuries to come. (The date for this comes from the Marvel Database; I think they get it from the "Eighth Day" crossover, published in 1999. Cyttorak is probably banished much earlier than this, but I can't find a time reference for it.)

circa 1450 AD

X-MEN (1963) #33 flashback: The Ancient One banishes the demon Xorak to the Crimson Cosmos inside the Ruby of Cyttorak.

1546 AD

The Mayans are conquered by the Spanish. The power of the Pendant of Kukulcan will lie dormant for over 400 years.

REVOLUTIONARY WAR (1775 to 1783)

A network of tunnels beneath what will become the Xavier Estate in Westchester is used by the British to store ammunition during the Revolutionary War. (The Super-Adaptoid will later use this as a hideout.)

circa 1815 AD

X-MEN (1963) #40 (1st story) page 15.5 flashback: Aliens from a tropical planet visit Earth. They build a robot and send it down to the planet to test humanity's levels of understanding. The android goes berserk, and becomes a menace. The aliens chase it north into the polar regions, where the cold renders it inert.

1816 AD, Summer

Inspired by stories of the alien android that went berserk one year prior, Mary Shelley begins writing the novel Frankenstein.

1920 AD

X-MEN (1963) #44 (1st story) flashback: A plane crash-lands in the domain of the Bird People. The only survivor is a baby that the Bird People decide to raise as their own. (This baby will grow up to be the Red Raven.)

1940 AD

X-MEN (1963) #44 (1st story) flashback: On his 21st birthday, Red Raven realises that he is not the same as the Bird People who raised him. He tries to convince them to leave humanity in peace. (After this I assume he has the adventures depicted in Red Raven (1940) #1.)

1948 AD

X-MEN (1963) #44 (1st story) flashback: Red Raven is unable to convince the Bird People not to go to war with humanity. He puts them in suspended animation and sinks their domain beneath the ocean.

1962 AD

X-MEN (1963) #41 flashback: The subterranean empire of Prince Gor-Tok is destroyed by underground atomic tests. Gor-Tok gathers his people, who are slowly killed by radiation until he is the only survivor. (Presumably it takes years for his people to all die off, and he wanders for a long time on his own.)

BEFORE CHARLES XAVIER IS BORN

Kurt Marko is married.
Cain Marko is born. (His age isn't given, but he definitely looks older than Charles.)
Kurt Marko's wife presumably dies some time between Cain's birth and Kurt remarrying in XY -23.

XY -32 or -33

Charles Xavier is born. This assumes Charles is 32 in XY 0.

XY -23

Charles Xavier's parents work on the first A-bomb project. This will become topical over time, but it's still useful as a guide to when they were alive. I've placed this assuming that they worked on the Manhattan Project.
Brian Xavier dies in an atomic explosion at Alamagordo, New Mexico. Kurt Marko had the chance to save him, but chose not to.
X-MEN (1963) #12 flashback: Charles attends his father's funeral, where his mother Sharon is comforted by Kurt Marko.
Months after the funeral, Kurt Marko marries Sharon Xavier.
X-MEN (1963) #12 flashback: Kurt Marko moves into the Xavier mansion.

XY -22

Cain Marko is expelled from school.
X-MEN (1963) #12 flashback: Kurt's marriage to Sharon Xavier has gone sour. Cain Marko moves into the Xavier mansion, and starts bullying Charles immediately.
Sharon Xavier dies.
X-MEN (1963) #12 flashback: After an argument with Cain, Kurt Marko dies in a lab accident. He saves Cain and Charles before he dies, and tells Charles that he knows about his special power.
Charles realises that he can read minds.

XY -19

Charles Xavier starts losing his hair in his early teens.
X-MEN (1963) #12 flashback: Charles Xavier uses his telepathy to read his teacher's mind. This placement assumes that he is 32 in XY 0, and 13 here.
X-MEN (1963) #49 (2nd story) page 1 to 5.2: Norton McCoy and Edna Andrews are married. Norton gets a job at a nuclear power plant, and later saves the plant from going into meltdown. After months of recovery, they move to a new town, and Edna falls pregnant.

XY -18

X-MEN (1963) #49 (2nd story) page 5.3 to 5.6: Hank McCoy is born (probably in June or July). This assumes that he turns 18 in XY 0.
One of Angel, Cyclops or Marvel Girl is born two months after Beast, around August or September. I would have this as Cyclops, but it's unconfirmed.
Quicksilver and the Scarlet Witch are possibly born around this time, although their ages have yet to be confirmed. Quicksilver is older than the Scarlet Witch.

XY -18 or -17

One of Angel, Cyclops or Marvel Girl is born at some point between two months to a year after Beast. I would have this as Angel, but its unconfirmed in the comics.

XY -17

X-MEN (1963) #12 flashback: Charles Xavier excels at various sports. Cain gets mad about it, and Charles has to knock him out to defend himself.

One of Angel, Cyclops or Marvel Girl is born a year after Beast (around June). I would have this as Marvel Girl, but it's unconfirmed in the comics.

XY -16

January: Iceman is born.
X-MEN (1963) #12 flashback: Cain drives Charles to college after vacation (probably August or September), and the two of them almost die in a car crash.
Lorna Dane is born. Weeks later her parents die in a plane crash. She is adopted by her father's sister. The family never tells her that they are not her real parents. (This assumes that Lorna is the same age as Iceman, being 18 in her first appearance in XY 2.)

XY -15

X-MEN (1963) #50 (2nd story), page 1: Hank McCoy is an exceptionally strong and agile toddler. (This assumes he is 3 here, and turns 18 in XY 0.)

XY -14

Cain Marko and Charles Xavier serve together in Korea.
X-MEN (1963) #12 flashback: Cain deserts under fire, and finds the Temple of Cyttorak, where a ruby transforms him into the Juggernaut. He is buried underneath tons of rubble.

Flashbacks to this event include: X-Men (1963) #32

BEFORE XY -10

X-MEN (1963) #21 flashback: Lucifer lords it over an enslaved people on a planet orbiting Sirius.

XY -10

X-MEN (1963) #20 flashback: Charles Xavier travels to Tibet, where he has a confrontation with the alien Lucifer. He frees the city from Lucifer's control, but sustains injuries that leave his legs paralysed.
After his defeat, Lucifer retreats to Europe and begins building a world-destroying bomb that's connected to his own heartbeat.
Xavier goes into seclusion in his family mansion, vowing to keep out of human affairs.
X-MEN (1963) #50 (2nd story) page 2.1 to 2.2: Hank McCoy, still a young boy, is strong enough to crush his uncle's hand in a handshake. (This assumes he is 8 here, and turns 18 in XY 0.)

XY -8

Beast's father loses his job, and moves the family to another city (probably somewhere in the New York area).
X-MEN (1963) #15 flashback: Hank McCoy is bullied, and discovers that he has unnatural agility. (This assumes he is 10 here, and turns 18 in XY 0).

XY -6

X-MEN (1963) #19 flashback: Calvin Rankin knocks over some beakers in his father's lab and inhales some gas. (This placement assumes he is 18 in XY 1, and 12 here.)

XY -5

X-MEN (1963) #19 flashback: Calvin Rankin beats up the school boxing champ, and realises that he has the power to mimic the talents of others. (This placement assumes he is 18 in XY 1, and 13 here.)

XY -4

Angel's wings begin to sprout when he is 13. (This placement assumes he is 17 in XY 0).

XY -3

X-MEN (1963) #19 flashback: Calvin Rankin hits a home run, and is great at every sport. His arrogance makes his fellow students hate him. (This placement assumes he is 18 in XY 1, and 15 here.)
Bobby Drake learns that he has mutant ice powers. His parents tell him that he should never reveal them for any reason. (This assumes Bobby's powers manifested when he turned 13.)

YEARS LEADING UP TO XY 0

Magneto begins making his plans for conquest. This involves the establishment of many secret bases, including Asteroid M and a number of islands in the Atlantic Ocean. He raised at least one of these islands from the ocean depths using his powers, and on that island he built and activated a perpetual motion machine.
Blob discovers that he is extra-strong and resilient. Thinking he's just a freak, he joins the carnival.
Unus becomes a wrestler.
El Tigre begins searching for the Pyramid of Kukulcan.
The Conquistador begins building a small army and preparing for world conquest or something.
Ka-Zar is attacked on the surface and flees to the Savage Land. (This probably happens many years before XY 0, but it's too vague to place right now.)
AIM begins the biochemical research that will lead to the creation of the Super-Adaptoid.
The Fantastic Four get their powers (in Fantastic Four (1961) #1).
Bruce Banner becomes the Hulk (in Incredible Hulk (1962) #1).
Peter Parker becomes Spider-Man (in Amazing Fantasy #15).
Donald Blake becomes Thor. (in Journey Into Mystery (1952) #83).
Henry Pym becomes Ant-Man (in Tales to Astonish (1959) #35).
Tony Stark becomes Iron Man (in Tales of Suspense (1959) #39).
Janet Van Dyne becomes the Wasp, and joins Ant-Man on his adventures (in Tales to Astonish (1959) #44).
Doctor Strange becomes active in New York (in Strange Tales #110).

XY -2

X-MEN (1963) #19 flashback: Calvin Rankin's father sets up a lab in a cave, and begins working on a machine that he says will make Calvin's mimicking power permanent. Months later the machine is done, but it causes such a power drain that a mob forms. Calvin's father dies trying to seal the cave with explosives. Calvin buries his father, and vows to finish his work.
While in seclusion, Charles Xavier has been working on Cyberno, a machine designed to locate mutants. He has also designed costumes for what will be his first team of X-Men.
Due to recurrent headaches, Scott Summers is taken by his orphanage supervisor to see an optometrist. The optometrist notices a weird glow in his eyes. He prescribes ruby quartz glasses for Scott, which help with his headaches. After Scott is gone, the optometrist files a report on him with the FBI.
X-MEN (1963) #40 (2nd story) flashback: Nuclear power plant worker Jack Winters tries to steal some radioactive materials, but is injured when it explodes in his hands. He checks himself into hospital with severe radiation burns. After a few weeks in hospital, Winters leaves with his hands bandaged. He soon discovers that his hands have transformed to unbreakable diamond, and that he has developed powers of telepathy and teleportation.
A few months after his first optometrist visit, Scott Summers and his orphanage supervisor Mr. Lamb leave for New York. They have another appointment with the same optometrist.

X-MEN (1963) #38 (2nd story) TV recording (same day): In Washington, Scott Summers saves some people by blasting a falling air conditioning unit. He is chased by an angry mob.

X-MEN (1963) #39 (2nd story), page 1 to 2.1: Also depicts the above scene.

After Scott's disappearance, his orphanage contacts the police.
X-MEN (1963) #38 (2nd story) page 1.4 (same day): FBI agent Fred Duncan and his partner watch footage of Scott blasting the crane and the air conditioner.
Fred Duncan tells the media about the "mutant menace".

X-MEN (1963) #38 (2nd story) page 2 to 5 (next day): Professor X ends his seclusion, goes to Washington, and allies with FBI agent Fred Duncan to help mutants.

X-MEN (1963) #39 (2nd story) page 2.2 to 5 (same day): Scott hops a train out of town, and is drawn to a shack by the mental power of Jack O'Diamonds.
X-MEN (1963) #40 (2nd story) (same day): Jack O'Diamonds forces Scott to work for him. Professor X comes to Scott's aid.
X-MEN (1963) #41 (2nd story) (same day): With Scott's aid, Jack O'Diamonds is able to break into a power plant and use the machinery to increase his powers, becoming the Living Diamond.
X-MEN (1963) #42 (2nd story) page 1 to 5.2 (same day): The Living Diamond absorbs too much power, and shatters. Professor X takes Scott back to his mansion, and recruits him as the first member of the X-Men.
Xavier modifies a previously designed costume so that it fits Scott, and designs a ruby quartz visor for him.

X-MEN (1963) #42 (2nd story) page 5.3 to 5.7 (later, maybe the next day): Scott tries on his costume, and is given the codename Cyclops.
Xavier modifies Cyclops' glasses to improve their design.

Professor X makes preparations to open his school for mutants. This includes the creation of many machines, vehicles and training devices in his mansion.
Professor X makes arrangements with FBI agent Fred Duncan for his X-Men to operate in some sort of partnership with the government. Presumably Cyclops meets Duncan during this time.

Hank McCoy wins a college scholarship.

XY -2, Autumn

Bobby Drake goes on a few dates with his girlfriend Judy.
X-MEN (1963) #44 (2nd story) page 1 to 5.3: Bobby goes on a date with Judy, which is interrupted by local bully Rocky Beasely. He uses his ice powers on Rocky, and is put in jail.
X-MEN (1963) #44 (2nd story) page 5.4 to 5.7 (next day): Professor X reads about Bobby in the newspaper, and sends Cyclops to his aid.

X-MEN (1963) #45 (2nd story) (same day): Bobby fights Cyclops until they wear each other out and the local sheriff captures them.
X-MEN (1963) #46 (2nd story) (same day): Professor X rescues Cyclops and Bobby, and mindwipes the town to forget Bobby's powers. Bobby is recruited into the X-Men, now code-named Iceman.

Angel's wings grow while he's at military school, and he keeps them hidden under his uniform. He has to leave school before taking a physical exam. (I know this placement isn't going to work, but I'll deal with that when the time comes.)
Angel is recruited by Professor X to join the X-Men.
Professor X designs a harness the Angel can use to hide his wings
September 21st: The football team at Hank McCoy's college loses its first game of the season.
September 28th: The football team at Hank McCoy's college loses its second game of the season.

XY -2, October

October 5th: The football team at Hank McCoy's college loses its third game of the season.
October 12th: The football team at Hank McCoy's college loses its fourth game of the season.
October 19th: The football team at Hank McCoy's college loses its fifth game of the season.
X-MEN (1963) #50 (2nd story) page 2.3 to 3.2: Hank is recruited into the college football team.
October 26th: Hank McCoy helps his college football team win its first game of the season.

XY -2, November

Professor X finishes the initial stages of converting Cyberno into the more powerful Cerebro.
November 2nd: Hank McCoy helps his college football team win its second game of the season.
November 9th: Hank McCoy helps his college football team win its third game of the season.
November 16th: Hank McCoy helps his college football team win its fourth game of the season.
November 23rd: Hank McCoy helps his college football team win its fifth game of the season.
November 30th: Hank McCoy helps his college football team win its sixth game of the season.

XY -2, December

X-MEN (1963) #50 (2nd story) page 3.3 to 5.5 (December 7th): Hank helps his team win the conference championship, and also stops some thieves trying to steal the gate earnings.

X-MEN (1963) #15 flashback (same day): Hank helps his team win the game and celebrates afterwards. He is dubbed "Beast" by the media, and there are suspicions that he may not be human.
X-MEN (1963) #51 (2nd story) page 1 to 2 (same day): The Conquistador watches Hank on TV, and decides to use him in his plan.
Reporters ask Hank about his abilities, but he flees the field without answering.
X-MEN (1963) #15 flashback (same day): Professor X reads about Hank in the newspaper. (A rushed extra edition, I assume.)
Hank attends a gay victory celebration that night. Xavier uses Cerebro to detect Hank's location, and sends Iceman to investigate. The Conquistador's goons kidnap Hank's parents.
X-MEN (1963) #51 (2nd story) page 3 to 5.5 (same day): The Conquistador's goons kidnap Hank. Iceman reports back to Xavier, having found Hank's house trashed.
X-MEN (1963) #52 (2nd story) page 1 to 2 (same day): Conquistador tries to get Hank to help him steal a miniaturised power plant, revealing that he has kidnapped his parents.
X-MEN (1963) #51 (2nd story) page 5.6 (same day): Conquistador threatens to kill Hank's parents.
X-MEN (1963) #52 (2nd story) page 3 to 4.1 (same day): Hank agrees to help the Conquistador. Xavier uses Cerebro to find Hank.

X-MEN (1963) #52 (2nd story) page 4.2 to 5.7 (next day, December 8th): Hank steals the power plant and brings it to the Conquistador, who refuses to release Hank's parents.

X-MEN (1963) #53 (2nd story) page 1.1 to 5.4 (same day): The X-Men arrive, and the Conquistador is killed in the following battle.
Professor X uses his telepathy to erase knowledge of Hank's powers.
X-MEN (1963) #15 flashback (same day): Professor X has dinner with Hank's parents and convinces them Hank should attend his school.
X-MEN (1963) #53 (2nd story) page 5.5 to 5.6 (same day): Hank agrees to join the X-Men under the codename of the Beast.

XY -1

Warren Worthington and Candy Southern spend some time together. This will be their last meeting before X-Men (1963) #31 in a couple of years time.
The X-Men begin their Danger Room training in March.
Conjecture: Unus wins the WWWF Championship on May 17th.
Magneto starts disrupting missile tests at Cape Citadel.

XY 0, January

The mutant who once masqueraded as Merlin wakes up after centuries of suspended animation. He is tricked by Thor into going back to sleep (as depicted in Journey Into Mystery (1952) #96).

It turns out that the Mad Merlin is faking his slumber, and he uses his mental powers to build a small army of criminals. He has them start building a machine which will mentally regress humankind.

The Avengers are formed (in Avengers (1963) #1).
Jean Grey gets a message from Professor X to enroll at his school. Her parents are hesitant until they are contacted by the US government.
X-MEN (1963) #1, page 1 to 12.4 (mid-January): Jean Grey joins the X-Men, and is given the codename Marvel Girl. Magneto disrupts another missile test at Cape Citadel.
X-MEN (1963) #1, page 12.5 to 23.9 (next day): Magneto takes over Cape Citadel. The X-Men go and force him to retreat.
Wanda and Pietro (also known as the mutants Scarlet Witch and Quicksilver) move to a small village in central Europe.
X-MEN (1963) #4 flashback & AVENGERS (1963 #47 flashback: After a few days in her new home, Wanda accidentally sets some houses on fire with her hex power. Magneto, in the area searching for mutants, rescues the Scarlet Witch from the angry mob. She and Quicksilver join him to repay their debt.

Presumably Magneto recruits Mastermind and the Toad around the same time.

Ant-Man becomes Giant-Man (in Tales to Astonish (1959) #49).
X-MEN (1963) #2 flashback (late January): The Vanisher robs a bank.

X-MEN (1963) #2, page 1 to 11.2 (same day): Professor X starts training the X-Men to face the Vanisher. The Vanisher warns the Pentagon that he plans to steal their defense plans.

X-MEN (1963) #2, page 11.3 to 17.2 (next day): Vanisher builds an army of goons. The X-Men fail to stop him from stealing the US defense plans.

Flashbacks to this story are in: X-Men (1963) #37

X-MEN (1963) #2, page 17.3 to 19.3 (next day): Vanisher demands 10 million dollars from the US government as blackmail. The X-Men are embarassed and humiliated by their defeat.
X-MEN (1963) #2, page 19.4 to 22.6 (next day): Vanisher shows up to collect his ransom. The X-Men defeat his goons while Professor X wipes his mind telepathically.
Presumably the Vanisher remains in custody of the authorities for quite some time after this.

XY 0, February

TALES OF SUSPENSE (1959) #49 (1st story) (early February): Angel temporarily goes bad, and fights Iron Man.
AVENGERS (1963) #3 (mid-February): Iron Man tries to recruit the X-Men to help the Avengers search for the Hulk.
X-MEN (1963) #3, page 1 to 24.6 (late February): The X-Men try to recruit the Blob, who doesn't want to join. He tries to take over the mansion with some carnies, but Professor X wipes all of thier minds.

Flashbacks to this story are in: X-Men (1963) #37

X-MEN (1963) #3, page 24.7 to 24.8 (next day): Blob has returned to his old job as a carnival freak.
The Avengers find Captain America in a block of ice, and thaw him out (in Avengers (1963) #4)

XY 0, March

X-MEN (1963) #4, page 1 to 9.3 (early March): The X-Men celebrate the one-year-anniversary of the beginning of their training. Magneto single-handedly steals an old battleship, and takes it to one of his island bases, where the Brotherhood - Toad, Mastermind, Quicksilver and Scarlet Witch - are waiting.
The next day, Magneto begins shelling the small South American nation of Santo Marco.
X-MEN (1963) #4, page 9.4 to 11.6 (next day): Professor X confronts Magneto on the astral plane, but cannot convince him to stop his war on humanity. Magneto conquers Santo Marco.
Weeks pass, in which Magneto consolidates his rule over Santo Marco. He builds an army, establishes curfews, closes the borders, and puts down a rebellion.
X-MEN (1963) #4, page 12 to 23 (mid-March): The X-Men drive Magneto and the Brotherhood out of Santo Marco. Professor X is injured in an explosion.
Weeks pass while the X-Men try to get the injured Professor X from Santo Marco to Westchester. The Brotherhood are searching for them the whole time.
Daredevil makes his debut (in Daredevil (1964) #1).
X-MEN (1963) #5, page 1 to 9.1 (late March): The X-Men return safely to the mansion. Marvel Girl's parents stop in for a visit on their way to the World Fair. The Brotherhood are still searching for the X-Men without success. (This is just outside of the April to October timespan for the New York World Fair, but the months-long gap between Strange Tales (1951) #120 and Fantastic Four (1961) #28 means I had to push it back slightly. Maybe Jean's parents are planning to stay in New York for a week or two.)
X-MEN (1963) #5, page 9.2 to 24 (next day): The X-Men fight Magneto and the Brotherhood in Manhattan, and then on Asteroid M. Asteroid M is destroyed. Professor X reveals that the X-Men have passed their final exam, and that he never really lost his powers.
STRANGE TALES (1951) #120 (1st story) (next day): Iceman and the Human Torch stop Captain Barracuda from robbing a boat.

XY 0, April

Mad Thinker begins studying the X-Men, and trying to discover the identity of Professor X. (My conjecture is that he does this using footage and photos of the battle with the Vanisher from X-Men (1963) #2.)

XY 0, May

JOURNEY INTO MYSTERY (1952) #109 (1st story) (early May): Magneto fights Thor in a sub in the New York harbor, while the X-Men fight the Brotherhood in Manhattan.

AVENGERS (1963) #16 flashback: The X-Men chase Quicksilver and the Scarlet Witch through New York. This doesn't match any of the X-Men/Brotherhood battles we've seen, so I'm placing it as part of the off-page battle in Journey Into Mystery (1952) #109.
X-MEN (1963) #37 flashback: Marvel Girl and Iceman beat up Mastermind. Again, these flashbacks don't match anything we've seen, so I'm placing them in Journey Into Mystery (1952) #109.

FANTASTIC FOUR (1961) #28 (next day): The Mad Thinker and the Puppet Master take control of Professor X, and manipulate the X-Men into attacking the Fantastic Four. (There's meant to be a several month gap between this and Strange Tales (1951) #120, but I've had to shorten it to two months, from March to May.)
Professor X erects psychic shields so that his mind can't be controlled again.
X-MEN (1963) #6 flashback (early May): A freighter gets too close to Magneto's island, so he hurls it away with his giant magnet.
X-MEN (1963) #6, page 1 to 8.1 (days later): Professor X and Magneto both get the idea to recruit the Sub-Mariner. Magneto manages to get a message to one of Namor's subjects, and Xavier decides to gather the X-Men and confront Magneto on his island base.
X-MEN (1963) #6, page 8.2 to 22 (next day): Namor goes to Magneto's island, where Magneto tries to win him over. The X-Men arrive and fight the Brotherhood and Namor. Eventually Namor gets sick of it all and leaves after forcing the Brotherhood to retreat.
AMAZING SPIDER-MAN ANNUAL (1964) #1 (mid-May): The X-Men ignore a message in the sky from the Human Torch to Spider-Man, and continue training.
X-MEN (1963) #7, page 1 to 6.3 (mid-May): The X-Men graduate prep school. Professor X leaves, and makes Cyclops team leader.
X-MEN (1963) #7, page 6.4 to 22 (next day): Magneto recruits the Blob, and they fight the X-Men. Blob eventually gets sick of fighting and goes back to the carnival.

Flashbacks to this story are in: X-Men (1963) #37

X-MEN (1963) #8, page 1 to 7.3 (mid-late May): Iceman and Beast are chased by an angry mob. Beast quits the team. This takes place over one day in mid-late May.
One week later, Beast debuts as a wrestler. He very quickly becomes a top-draw heel in the WWWF. (It's implausibly quick, to be honest, but there's a reference in X-Men (1963) #20 that means this story has to happen before mid-June.)

XY 0, June

X-MEN (1963) #8, page 7.4 to 20 (June 6th): After wrestling Unus, Beast helps the X-Men defeat him. This happens on June 6th, because it has to be on the same day as a WWWF show at Madison Square Garden in 1964.

Flashbacks to this story are in: X-Men (1963) #37

XY 0, July

Conjecture: Due to his criminal activities, Unus is pressured by the WWWF into dropping the championship. This happens on July 11th.
The X-Men release the first official photos of Magneto and his Brotherhood to the media. (My conjecture is that they do this as a reaction to the anti-mutant mob that chased Beast and Iceman in X-Men (1963) #8.)
STRANGE TALES (1951) #128 (1st story): Quicksilver and the Scarlet Witch try to get help from the Fantastic Four.

XY 0, August

Professor X contacts Cyclops and tells him to bring the X-Men to Europe. The X-Men take about a week to get organised.
X-MEN (1963) #9: The X-Men delay the Avengers in Europe while Xavier confronts and defeats Lucifer.
Lucifer retreats to another base in the American southwest. He sets up a psychic screen so that it is difficult for the X-Men to find him or remember his name.

XY 0, September

FANTASTIC FOUR (1961) #35: Xavier and Cyclops investigate some potential mutants at State University, and bump into Reed Richards and the rest of the Fantastic Four.

XY 0, October

FANTASTIC FOUR (1961) #36: The X-Men attend the engagement party of Reed Richards and Sue Storm, along with many other heroes.

XY 0, November

X-MEN (1963) #10 flashback: Ka-Zar causes a ruckus at an Antarctic base.

Washington contacts Professor X about Ka-Zar, and the professor determines that he is not a mutant.

X-MEN (1963) #10, page 1 to 4.6: The X-Men find out about Ka-Zar, and decide to head to Antarctica to investigate.
X-MEN (1963) #10, page 5.1 to 20 (days later): The X-Men have an adventure in the Savage Land with Ka-Zar and Zabu.

XY 0, December

Professor X finishes working on a radar image beam attachment for Cerebro, and builds the components for a mento-intensifier helmet.
Juggernaut finally digs himself out of the rubble in Korea, and begins making his way to America.
X-MEN (1963) #11: The Brotherhood tries to recruit the Stranger, who turns Mastermind to stone and takes Magneto and the Toad back to his home planet. Quicksilver and the Scarlet Witch decide to return home to Europe. The X-Men return home, where Cerebro alerts Xavier to the Juggernaut's approach.
X-MEN (1963) #12 (next day): As the Juggernaut approaches the mansion, the X-Men make preparations to face him.

X-MEN (1963) #13, page 1 to 20.4 (same day): Juggernaut attacks the mansion, and is defeated by the X-Men and the Human Torch.

Flashbacks to this issue include: X-Men (1963) #32 and #37.

X-MEN (1963) #13, page 20.5 to 20.6 (next day): The male X-Men begin recuperating from their injuries under the care of Marvel Girl.
Professor X hands his comatose brother over to the authorities for treatment.
The X-Men put out an official statement that Quicksilver and the Scarlet Witch are no longer to be considered as menaces to society.
The Stranger arrives on his homeworld with Magneto and the Toad as prisoners. He leaves to survey other worlds, and the two mutants are allowed to roam free.

XY 1, January

AVENGERS (1963) #16, page 6.3 to 8.6: Iron Man, Giant-Man and the Wasp decide to quit the Avengers. Hawkeye is accepted as a new member.
AVENGERS (1963) #16, page 9.5 to 10.5 (next day): Quicksilver and the Scarlet Witch learn that the Avengers are seeking new members. They decide to try out.
AVENGERS (1963) #16, page 13.4 to 20 (days later): Quicksilver and the Scarlet arrive in New York and are accepted as part of the new Avengers team, along with Hawkeye and Captain America.

XY 1, February

X-MEN (1963) #18 flashback: Magneto repairs an old spaceship and leaves the Stranger's world, abandoning the Toad.

XY 1, between February and April

After his defeat by Iron Man (in Tales of Suspense (1959) #68), Count Nefaria begins gathering his Maggia forces, and recruits some super-villains: Unicorn, Eel, Plantman, Scarecrow and Porcupine.
Professor X begins working on mechanical leg braces that will allow him to walk.
Professor X buys a private jet.

XY 1, April

Conjecture: Magneto arrives back on Earth, and uses the instruments on his spaceship to locate the mansion. Presumably he waits for the X-Men to be gone to invade the mansion, or he arrives on Earth while they're out fighting the Sentinels.
X-MEN (1963) #14, page 1 to 3: The X-Men recover from their injuries, and Bolivar Trask holds a press conference warning of the dangers of mutants.

FANTASTIC FOUR ANNUAL (1965) #3 (same day): The X-Men attend the wedding of Reed Richards and Sue Storm, helping to fight off a horde of villains.

X-MEN (1963) #14, page 4 to 20 (next night): Professor X organises a debate against Bolivar Trask. The Sentinels are unveiled, and immediately decide to take over the world. The X-Men find the Sentinel HQ.

X-MEN (1963) #15 (same day): The X-Men attack Sentinel HQ and are all captured.
X-MEN (1963) #16, page 1 to 7.2 (same day): Professor X escapes from the base, and Master Mold threatens Trask into making more Sentinels.

X-MEN (1963) #16, page 7.3 to 20 (next day): After midnight ticks over the X-Men escape, Xavier finds a way to disable the Sentinels, and Trask dies while destroying the Master Mold.

Military and medical personnel arrive at Sentinel HQ.
X-MEN (1963) #17 (same day): Iceman is taken to hospital, and Magneto takes out the X-Men one by one at the mansion. Angel's parents are captured by Magneto.
X-MEN (1963) #18, page 1 to 20.3 (same day): Iceman stops Magneto from using the DNA of Angel's parents to create a mutant army, and Xavier summons the Stranger to take Magneto away.
Xavier does a mindwipe on Angel's parents.

X-MEN (1963) #18, page 20.4 to 20.5 (next day): Angel's parents wake up with no knowledge of their ordeal.
Xavier begins repairing Cerebro, which was smashed by Magneto.
Conjecture: Cyclops becomes more distraught than usual around this time. It could be something to do with the anti-mutant sentiment stirred up by Trask.
After noticing that their powers are fading, Quicksilver and Scarlet Witch decide to return to their European homeland (in Avengers (1963) #30).

XY 1, May

AVENGERS (1963) #47 flashback: During a battle with Iron Man, the villainous Black Knight (also known as Professor Nathan Garrett) plummets to his apparent death. (Originally depicted in Tales of Suspense (1959) #73.)

AVENGERS (1963) #48 flashback (same day): The dying Professor Garrett calls his nephew Dane Whitman, who arrives too late to save him. Before he dies, Garrett asks Whitman to use his research for good, and Whitman vows to atone for his uncle misdeeds.

AVENGERS (1963) #48 flashback (a few days later): Dane Whitman finds his uncle's weapons while searching his castle (which he inherited). He vows that one day the Black Knight will live again, and begins a long and intense study of his uncle's scientific secrets.
Vera helps Calvin Rankin find some books on mine engineering. Calvin keeps pestering her for a date.
Conjecture: Xavier must have gotten Cerebro's basic functions working by this point, because he uses it to scan the Mimic in X-Men (1963) #19. He only gets it fully functional just before issue #20.
X-MEN (1963) #19, page 1.1 to 9.3 (mid-May): Iceman, Beast, and Marvel Girl all meet Calvin Rankin. He mimics their powers and figures out that they are the X-Men.

Calvin follows Marvel Girl back to the mansion. While lurking around outside he mimics Xavier's telepathy and learns how to control Cyclops' optic blasts.

X-MEN (1963) #19, page 9.4 to 20.5 (next day): The next day, Calvin (as the Mimic) fights the X-Men, then goes to use his father's machine, but it removes his powers rather than making them permanent.
Professor X removes knowledge of the X-Men from Calvin's mind.
August Hopper is fired from Metro College due to his crackpot theories about giant insects. He gets a job at Ryan Chemical.

XY 1, June

Calvin Rankin enrolls for Summer classes at Metro College.
Xavier finishes his repairs on Cerebro.
X-MEN (1963) #20 flashback (early June): The Blob and Unus meet and decide to team up. They are being influenced by the alien Lucifer.

Lucifer makes Unus immune to the raygun Beast created to make his powers go haywire.

X-MEN (1963) #20 (a few days later, early June): The X-Men fight Blob and Unus. Xavier is struck down by Lucifer. Marvel Girl uses a mental-wave amplifier to revive him, and learns of his first confrontation with Lucifer.
X-MEN (1963) #21 (next day): The X-Men stop Lucifer from using the Dominus computer to enslave humanity. Lucifer is banished to another dimension by his masters.
Professor X gives Marvel Girl more detailed instructions on how to operate the mental-wave amplifier.
An alien from Sirius (possibly fleeing from the tyranny of Lucifer's people) lands on Earth to conquer it. He is able to recruit the mutant Changeling.
The Changeling recruits Blob and Unus into Factor Three.

Mastermind reverts from an inert statue to flesh and blood. He goes in search of other evil mutants and finds Factor Three. (There's no specific timeframe for when this happens.)

Marvel Girl's parents decide she should attend another school.
X-MEN (1963) #22, page 1 to 17 (Late June, Saturday): A team of villains working for Count Nefaria (Unicorn, Eel, Plantman, Scarecrow, and Porcupine) captures the X-Men and ships them off to Nefaria's base.

Professor X gets the letter from Marvel Girl's parents.

X-MEN (1963) #22, page 18 to 20 (next day, Sunday): The X-Men arrive by ship at Nefaria's base. Nefaria asks them to help him blackmail Washington DC for one million dollars.

X-MEN (1963) #23 (same day): The X-Men stop Nefaria's plan. Marvel Girl gets the letter telling her she has to leave the school.

X-MEN (1963) #24, page 1 to 4 (next day, Monday): Marvel Girl goes to Metro College. August Hopper, as the Locust, attacks a number of farms with giant insects.
X-MEN (1963) #24, page 5 to 8.2 (next day, Tuesday): The X-Men fight giant insects at a farm and take a dead one for study.
Marvel Girl begins redesigning the X-Men costumes.

XY 1, July

X-MEN (1963) #24, page 8.3 to 9.7 (a few days later, Friday): The Locust experiments with his insect enlarging ray.
X-MEN (1963) #24, page 10 to 20 (next day, Saturday): The X-Men defeat the Locust.
X-MEN (1963) #25, page 1 to 8.3 (days later, Monday): The X-Men save an orphanage while dropping Jean back at college, and El Tigre finds half of the Pendant of Kukulcan.
Spider-Man tries and fails to join the Avengers (in Amazing Spider-Man Annual (1966) #3).
X-MEN (1963) #25, page 8.4 to 12.1 (days later, Wednesday): El Tigre arrives in New York and Xavier sends the X-Men to investigate.

X-MEN (1963) #25 flashback (same day): El Tigre causes a riot at a nightclub, the police question the nightclub owner, and El Tigre uses the pendant to evade the police.
X-MEN (1963) #25, page 12.2 to 20 (same day): On the same day, El Tigre and his goons defeat the X-Men, and El Tigre gets the second half of the pendant. He gains the full power of Kukulcan.
X-MEN (1963) #26, page 1 to 6.1 (same day): Kukulcan flies away, and Xavier revives the X-Men.

X-MEN (1963) #26, page 6.2 to 20 (next day, Thursday): The X-Men fly to San Rico and defeat Kukulcan. Angel is hurt by Cyclops.

Cerebro detects a powerful new mutant menace while the X-Men are in San Rico.
Conjecture: This happened when agents of Factor Three restored the Vanisher's memories and recruited him. (There's precedent for Cerebro sounding the alarm when one of Xavier's mind-wipe victims regains their memories.)

X-MEN (1963) #27, page 5.3 to 13.1 flashback (next day, Friday): The X-Men return from San Rico. Calvin Rankin regains his powers and memory in a lab explosion. Puppet Master tries and fails to control Xavier. Xavier and the X-Men try to recruit some new members, with no luck.
X-MEN (1963) #27, page 13.2 to 15 flashback (next day, Saturday): The X-Men pick up Marvel Girl from college, and the Mimic follows them back to the mansion. Professor X recruits Mimic to the X-Men. The Puppet Master takes over the Mimic and orders him to fight the X-Men.

X-MEN (1963) #27, page 1 to 5.2 (same day): The Mimic beats up the X-Men.
X-MEN (1963) #27, page 16 to 20 (same day): Puppet Master sends the Mimic out to look for the Fantastic Four. The X-Men track down the Puppet Master and defeat him. Mimic joins the team.

Professor X begins making calculations to predict what actions the new mutant menace (aka Factor Three) will take.
Agents of Factor Three capture the Banshee. He is fitted with a headband containing a bomb, and forced to work for them.

XY 1, Fall (August/September)

Johnny Storm begins classes at Metro College (in Fantastic Four (1961) #50).
The Mad Thinker creates a computer called Quasimodo (the Quasi-Motivational Destruct Organism) as part of a plan to destroy the Fantastic Four. (Depicted in Fantastic Four Annual (1966) #4.)
Candy Southern convinces her parents to let her get an apartment in New York. She gets a job at the UN Building, and takes night classes at Archer College.
During this time someone (probably an agent of Factor Three) tries twice to take over Professor X's mind.

XY 1, September

Ralph Roberts, who has been working for Tony Stark doing cobalt experiments, quits because Stark refuses to divulge the secrets of the Iron Man armor. Ralph forms his own company, Roberts Research Lab.

XY 1, October

AIM completes the creation of the Super-Adaptoid.
The Avengers fight the Super-Adaptoid, which absorbs the powers of Hawkeye, Goliath, Wasp and Captain America. The Adaptoid believes that he has killed Captain America and, believing that his purpose has been fulfilled, takes refuge in some underground tunnels not far from the Xavier mansion (as depicted in Tales of Suspense (1959) #84).
The X-Men are sent on vacation during this time.
Professor X gains custody of the comatose Juggernaut, and places him behind a locked door in the cellar.

Professor X begins working on an energo-transformer that he intends to use to drain Cain Marko of the Juggernaut's powers. He also begins making arcane studies of the demon Cyttorak.

When the X-Men return from vacation, they notice that a heavy oaken door in the cellar is locked and off-limits. This is where Professor X has stashed the Juggernaut.

XY 1, November

Sensing Thor's absence from Earth, the Mad Merlin awakens and takes control of his army of criminals. He starts calling himself the Warlock. (Thor's absence could be due to his trip to Rigel (in Thor #131-134) or his stay in Asgard (#136-137).
The Ogre and Banshee are assigned by their masters in Factor Three to monitor the New York area. Their task is to discover the headquarters of the X-Men.
The Mimic transfers from Metro College to Xavier's, and goes to live at the mansion. (This is probably meant to happen shortly after X-Men (1963) #27, but it doesn't seem all that likely that the Mimic would last almost half a year living with the X-Men. I've assumed that it took him a while to finally move in.)

Professor X begins training the Mimic. Part of this training involves psychically boosting the range of his powers.

X-MEN (1963) #28: The X-Men defeat the Ogre (an agent of Factor Three) and release the Banshee from his influence.
Professor X places a tracking device in Banshee's headband.
Banshee returns to Ireland. Shortly afterward he rents a chalet in central Europe and begins searching for Factor Three using equipment provided by Professor X.

XY 1, December

Angel completes his recovery from the injuries he sustained when Cyclops blasted him. (It's a long recovery, but I'm chalking that up to Angel's hollow bones).
X-MEN (1963) #29 (early December, weekend): The X-Men fight the Super-Adaptoid, and the Mimic loses his powers and has to quit the team.
Calvin Rankin returns to college, promising not to reveal any X-Men secrets.
Mole Man destroys the Stark Industries building (as depicted in Tales of Suspense (1959) #87-88).
X-MEN (1963) #30 (early-mid December): The Warlock kidnaps the X-Men, hoping to marry Jean Grey, but they put a stop to his plans. Happens very shortly after issue #29.
Professor X equips the X-Men with signal watches.
X-MEN (1963) #31 (mid-late December, Friday): The X-Men help Ralph Roberts when he goes mad and becomes the Cobalt Man.
The newly rebuilt Stark Industries is dedicated on the Monday after #31 (as depicted in Tales of Suspense #89).
The Mole Man builds a diamond robot which he uses to wreak havoc on the forces of Tyrannus.
STRANGE TALES (1951) #156 (1st story) (late December); The X-Men react to the Supreme Hydra's threat to detonate a Death Spore Bomb that will kill billions. Nick Fury deals with the problem and defeats Hydra (as shown in Strange Tales (1959) #157-158).
At Xavier's suggestion, Marvel Girl designs individual costumes for each of the X-Men.

XY 2, January

Zelda turns down a date with Rocky Rhodes of the Satan's Saints biker gang.
Ralph Roberts appears on TV talking about his intention to create a cobalt ship capable of penetrating the Earth's core.
Professor X learns about the Ancient One's confrontation with Xorak while probing the Juggernaut's mind.
X-MEN (1963) #32 (early January): On Iceman's 18th birthday, Professor X's attempt to help the Juggernaut with his energo-transformer goes wrong due to the interference of Factor Three.

Cyclops calls the governor of New York and gets him to call out the National Guard.

X-MEN (1963) #33 (next day): After midnight ticks over, the X-Men, with some help from Doctor Strange, banish Juggernaut to the Crimson Cosmos. While they are busy, Factor Three kidnaps Professor X and smashes Cerebro. Takes place in the very early hours of the morning, the day after last issue.

Doctor Strange is busy dealing with the Living Tribunal when the X-Men contact him (as depicted in Strange Tales #158), so he doesn't give them much of his time.
The X-Men (specifically Beast) spend the day trying to fix Cerebro.
X-MEN (1963) #34 flashback (same day): Ralph Roberts is kidnapped by subterranean minions of Tyrannus.
X-MEN (1963) #34, page 1 to 11.2 (same day): The X-Men go to rescue Ralph, and get embroiled in the war between Tyrannus and the Mole Man.

X-MEN (1963) #34, page 11.3 to 20.6 (next day): The X-Men rescue Ralph, and leave Tyrannus and Mole Man in a river that erases their memories. Happens in the very early hours of the morning, just after midnight.
While Professor X is a captive, Factor Three are able to extract his memories.

XY 2, February

Angel's parents leave for a Caribbean cruise.
Spider-Man battles the Kingpin (as depicted in Amazing Spider-Man #51).
X-MEN (1963) #35 (early February, weekend): Banshee is captured by Factor Three. The X-Men and Spider-Man have a misunderstanding fight due to the manipulations of Factor Three, and a garbled warning from Banshee.
X-MEN (1963) #36, page 1 to 5 (next day): The X-Men foil an attempted robbery on the mansion. With no available money to get to Europe, Angel and Marvel Girl try to apply for welfare.

Tom Regal steals an experimental exo-skeleton from a university research center.
X-MEN (1963) #36, page 6 to 20.1 (same day): On the same day, the X-Men stop Tom Regal aka Mekano from destroying his father's library. They receive a cash reward.

X-MEN (1963) #36, page 20.2 to 20.3 (next day): The X-Men board a flight to Europe.

X-MEN (1963) #37 (same day): In Europe the X-Men are captured and put on trial by Factor Three.
X-MEN (1963) #38 (1st story), page 1 to 6.3 (same day): The X-Men escape from Factor Three HQ.

X-MEN (1963) #38 (1st story), page 6.4 to 15 (next day): The X-Men try to stop Factor Three from starting World War 3.

X-MEN (1963) #39 (1st story) (same day): The X-Men stop the Mutant-Master's plan and rescue Professor X and Banshee. Mutant-Master is revealed to be an alien, and the rest of Factor Three turn on him. Professor X rewards the X-Men with new costumes.

XY 2, between March and August

The Stranger acquires the creature known as the Abomination, and loses interest in Magneto and the Toad. (Stranger's capture of the Abomination happened in Tales to Astonish (1959) #91.)
Quicksilver learns that he can use his speed to fly for short bursts (as depicted in Avengers (1963) #43).
The Silver Surfer battles the computer Quasimodo, giving him a misshapen android body. (Depicted in Fantastic Four Annual (1967) #5).
Some time during Spring, Professor X assigns the novel Frankenstein to be read by the X-Men. Iceman doesn't bother to read it.
AVENGERS (1963) #48 flashback: After months studying his uncle's secrets, Dane Whitman finishes creating a new suit of armour, and genetically engineers a winged horse that he calls Aragorn.
Professor X installs special controls in Cyclops' gloves that allow him to open his visor without touching it.
Professor X builds a machine designed to brings the Juggernaut back from the Crimson Cosmos. It's also designed to send the Juggernaut back, unless he is otherwise treated.

XY 2, August

Dane Whitman and his assistant coop themselves up in Whitman's castle, and begin experimenting with magnetic broadcasts into outer space.
The Warlock wakes up from his comatose state. He begins touring the US under the guise of the Maha Yogi and hypnotising his audiences to build an army of slaves he can call on at any time.
Vera and Hank have their last date for a number of weeks (presumably because Xavier's about to start working the X-Men extra-hard.)
Professor X learns that he is dying of an incurable illness, and begins pushing the X-Men in preparation for his death.
Professor X tells Marvel Girl that he is dying. He and Marvel Girl begin working on a secret project, to awaken her telepathic abilities. He also shows her some of his "mind machines".
Professor X has his will drafted, leaving his fortune in a charitable fund to be administrated by Scott Summers.
X-MEN (1963) #40 (1st story), page 3.4 flashback: An arctic expedition financed by the New York Museum discovers what they believe to be Frankenstein's Monster in a block of ice. They decide to take it back to New York in their ship.

XY 2, September

Professor X intercepts a radio message that mentions the arrival of Frankenstein's Monster to New York. He investigates the monster, still frozen in ice aboard the ship. The monster is unloaded and taken to the museum. The museum staff plan to thaw it out, but the government orders them not to perform any experiments on the monster yet.

X-MEN (1963) #40 (1st story), page 1.1 to 15.6 (same day): The X-Men fight Frankenstein's Monster, and discover that it is actually a robot left by an alien civilisation 150 years ago. The monster is defeated when Iceman freezes it.

X-MEN (1963) #40 (1st story), page 15.7 (next day): The X-Men read about their adventure in the newspaper.
X-MEN (1963) #41 (1st story), page 1 to 10.3 (mid-September): Beast and Iceman encounter the subterranean prince Gor-Tok in the New York subway system, giving him the name Grotesk. They return to the mansion to inform the rest of the X-Men.

AVENGERS (1963) #47 (same day): Dane Whitman is experimenting with magnetic broadcasts in his castle, and Magneto uses these broadcasts to transport himself and the Toad back to Earth. After capturing Whitman and taking over his castle, Magneto lures Quicksilver and the Scarlet Witch to the castle and captures them.
Professor X senses Magneto's return to Earth.
X-MEN (1963) #41 (1st story), page 10.4 to 14.6 (same day): The X-Men try to stop Grotesk from capturing a nuclear oscillotron that can cause word-destroying earthquakes. He does not get the machine, but he does capture a lab assistant and takes him back to his ruined empire.
AVENGERS (1963) #48 (same day): Dane Whitman escapes and takes up the mantle of his deceased uncle, the Black Knight. He tries to get help from the Avengers, but by the time they return Magneto has left with Scarlet Witch and Quicksilver as his captives.
X-MEN (1963) #41 (1st story), page 15 (same day): Cyclops and Beast track Grotesk back to his lair.
X-MEN (1963) #42 (1st story), page 1.1 to 2.6 (same day): On the same day, Angel and Iceman are forbidden from going to the aid of Cyclops and Beast by Professor X.
Professor X records a farewell message to the X-Men, before going to confront Grotesk.
X-MEN (1963) #42 (1st story), page 2.7 to 15 (same day): Grotesk finds the nuclear oscillotron, and Professor X sacrifices his life to stop him from destroying the world.

AVENGERS (1963) #49, page 1.1 to 20.5 (next day): Magneto takes his captives to an island base that he set up years earlier. He convinces them to accompany him to the United Nations to demand a separate mutant nation. The Avengers arrive, and in the ensuing battle Magneto manipulates things so that the Scarlet Witch is grazed by a bullet fired by a policeman. He retreats to his island, with Quicksilver now firmly on his side.
The X-Men arrange Professor X's funeral. They try to contact Banshee, but he is away on a mission.
Also during this time, Magneto stops several cargo ships passing close to his island, and takes their shipments of computer parts. He uses these parts to build a machine that he plans to use to enslave the will of everyone on Earth.
Also during this time, Magneto builds an escape ship out of non-metallic materials, just to prove that he can do it.
Also during this time, Magneto heads out to California, recruits Mesmero, builds a machine called the psyche-generator, and invents some special knock-out gas. Mesmero starts using the psyche-generator to summon and recruit latent mutants as his Demi-Men, and has them begin building a mutant city in the California desert.
X-MEN (1963) #43 (1st story), page 1 to 10 (days later): The X-Men attend Professor Xavier's funeral. Quicksilver also attends, but runs away when the X-Men spot him. The X-Men watch a video message left by Xavier, which informs them that he was dying of an incurable disease, and has been training Marvel Girl in telepathy. Meanwhile, Quicksilver returns to Magneto's island, and Magneto gets mad about him attending the funeral.
Using Angel's money, the X-Men arrange to be aboard a ship that will be passing near Magneto's island.
Magneto designs a special confining apparatus for each of the X-Men.
Black Panther helps the Avengers against the Grim Reaper, and joins the team (as depicted in Avengers (1963) #52).
X-MEN (1963) #43 (1st story), page 11 to 15 (days later): Magneto captures a passing ship to take its supplies. The X-Men are aboard, and in the ensuing fight they are captured.

X-MEN (1963) #44 (1st story), page 1 to 3.5 (same day): Magneto has the Toad place the X-Men in specially designed confining devices.
He also has the Toad disconnect the special controls in Cyclops' gloves, and arranges it so that the Angel will escape and contact the Avengers.
X-MEN (1963) #44 (1st story), page 3.6 to 15 (same day): Angel escapes, and while flying to New York has an adventure with the Red Raven.

X-MEN (1963) #45 (1st story), page 5 (next day): Angel reaches New York.

AVENGERS (1963) #53, page 3.4 to 6.3 flashback (same day): Angel heads for Avengers Mansion and convinces them to return with him to Magneto's island.
X-MEN (1963) #45 (1st story), page 1 to 4 (same day): Cyclops escapes his cell, and has to chase the Toad when he is spotted.
X-MEN (1963) #45 (1st story), page 6.1 to 6.3 (same day): Cyclops chooses one of three tunnels, hoping to find the Toad.
AVENGERS (1963) #53, page 6.4 to 7.3 flashback (same day): Angel and the Avengers arrive at the island. The Avengers find a bug on Angel's wing, and conclude that he's a spy for Magneto.
X-MEN (1963) #45 (1st story), page 6.4 to 9.2 (same day): Cyclops meets Quicksilver, and they talk after a brief scuffle. Toad warns Magneto that Cyclops has escaped.
AVENGERS (1963) #53, page 7.4 to 8.2 flashback (same day): Hawkeye fires a spy arrow inside Magneto's base, and sees Cyclops and Quicksilver having a friendly chat.
The Avengers figure out that Magneto is trying to sow dissension, and they plan to play along. They tell Angel about their plan, and leave him tied up loosely so that he can escape and help them out later.
AVENGERS (1963) #53, page 8.3 flashback (same day): The Avengers leave Angel tied up in their ship.
X-MEN (1963) #45 (1st story), page 9.3 to 15.4 (same day): Cyclops and Quicksilver argue, and Cyclops wins the ensuing fight. He is confronted by the Avengers.
AVENGERS (1963) #53, page 1 to 3.3 (same day): Cyclops flees from the Avengers, unsure of their true identities.
AVENGERS (1963) #53, page 8.4 to 20.6 (same day): The Avengers pretend to fight among themselves to confuse Magneto. Magneto tries to mind-control the X-Men into fighting the Avengers, but Angel disables his machine and the Avengers win the fight. Magneto tries to make a getaway in an escape craft, but he is betrayed by the Toad and cast into the ocean just before the island explodes. Toad, Quicksilver and Scarlet Witch escape together. The X-Men and Avengers find no trace of Magneto except his helmet.

XY2, October

Cyclops arranges for lawyer Foggy Nelson to come to the mansion and read Xavier's will.
X-MEN (1963) #46 (1st story), page 1 to 15.2: Foggy Nelson comes to the mansion to read Xavier's will, in which the X-Men are left everything. The Juggernaut is summoned back from the Crimson Cosmos by one of Xavier's machines, and the X-Men fight him for a while before he is sent back. FBI agent Fred Duncan tells the X-Men that they will have to disband and split up now that Xavier is dead.

The X-Men shut down all of Xavier's machines before they leave the mansion.
X-MEN (1963) #46 (1st story), page 15.3 to 15.7 (same day): The X-Men depart the mansion and go their separate ways.

The X-Men all return to live with their parents for a while. (I guess Cyclops just stays in a hotel.)
X-MEN (1963) #47 (1st story), page 1 to 15 (days later): Iceman and Beast get together for a double date in New York. They battle and defeat the Maha Yogi.
The X-Men all receive letters from Fred Duncan telling them where they will be stationed. Cyclops and Marvel Girl are to operate in New York, Iceman and Beast in California, and Angel is to work as a roving agent.
Angel somehow convinces the Avengers to loan him a supersonic jet.
Marvel Girl gets a job as a model in New York, using this as an excuse for not returning to live with her parents. While on the job she averts several near-disasters.
Cyclops lands a job as a radio reporter, and records his first report.

X-MEN (1963) #48 (1st story), page 1.1 to 15.7 (same day): Cyclops and Marvel Girl battle Computo and its army of Cybertrons. They uncover the real mastermind behind this threat, Quasimodo, who flees before he can be captured.

XY2, November

Lorna Dane is mesmerised by Mesmero's psyche-generator, and begins a 1200 mile journey to San Francisco.
Iceman and Beast move to San Francisco and rent an apartment together. Beast begins working on a portable version of Cerebro. Iceman gets them a cover job as sky-divers, billed as the Danger Twins.
X-MEN (1963) #49 (1st story), page 1 to 15: Mesmero summons an army of latent mutants to San Francisco. Among them is Lorna Dane, who is rescued by Iceman and Beast. They summon the rest of the X-Men, and Mesmero and his Demi-Men capture Lorna.

X-MEN (1963) #50 (1st story), page 1 to 15 (same day): Mesmero awakens Lorna's magnetic powers. The Demi-Men capture the X-Men. Magneto shows up and declares that he is Lorna's father.
X-MEN (1963) #51 (1st story), page 1 to 14.7 (same day): The X-Men escape, but Lorna joins Magneto's cause out of familial loyalty. Magneto's legs are injured during the battle.

The X-Men spend several days creating the Erik the Red disguise for Cyclops, which includes a way to redirect his optic blasts through his hands.
Meanwhile, Iceman goes to Lorna's hometown to question her family and read newspaper files. He learns that she is not Magneto's daughter.
X-MEN (1963) #51 (1st story), page 15.1 to 15.5 (days later): "Erik the Red" attacks Mesmero's mutant city.

X-MEN (1963) #52 (1st story), page 1 to 15 (same day): Erik the Red fights his way into the city, and demands to be made Magneto's second-in-command. He helps the X-Men invade the city. Iceman returns, and gives Lorna proof that she is not Magneto's daughter. Mesmero and the Demi-Men are defeated and the city is blown up, but Magneto escapes.

AVENGERS (1963) #60 (November 21st): The X-Men attend the wedding of the Wasp and Yellowjacket.

XY 2, December

X-MEN (1963) #53 (1st story), page 1 to 15: At the mansion, Marvel Girl accidentally summons Blastaar from the Negative Zone while experimenting with Xavier's machines. The X-Men fight and defeat Blastaar, who is seemingly killed.

Saturday, August 7, 2021

Timeline - Up to February 1969

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