After managing to refrain from having an incident during his 8½ months of travel from British Columbia, Bruce Banner crosses the Pakistani border into India. He is attacked by local bandits and turns into the Hulk.
They discover a possible chance at accessing the same wormhole Thor used to travel to Earth, but, when Foster informs Erik Selvig of this breakthrough, he warns her that it might be a bad idea.
Around midnight, Foster, Darcy Lewis, and a few S.H.I.E.L.D. agents try to open the wormhole. At first the portal stabilizes, but it eventually fails. Foster is undeterred by this failure, and vows not to give up looking for Thor.
In the Arctic, a Russian oil team discovers the crashed Valkyrie. Eighteen hours later, S.H.I.E.L.D. agents are dispatched to the area, and exploring the wreckage they find the body of Steve Rogers, who is still alive and cryogenically preserved in the ice.
Billy Russo, egged on by his friend Frank Castle, participates in a game of "down the line" with army comrades, attempting to get to the end of a line of them while being punched and kicked. He is kicked down by the end. Castle then goes and takes a beating, eventually ending up in the mud with his friend. The two get up and Russo tells him he loves him, before jokingly punching him himself.
After 22 months in Sokovian prison, Mary Walker has a third alter personality of hers, which she had not been aware of, triggered. The third alter is vicious, ruthless, and bloody, tearing through her captors and escaping, leaving a bloodbath in her wake.
Mary Walker is found, with her Mary personality back at the fore, as United States Armed Forces close in on her location after hearing reports of the carnage. She is clueless as to how she escaped, not retaining the memories of her other alters, and assumes her Walker alter got her out. However, Walker would go on to assume that, since she, too, was not involved in their escape, Mary must have convinced someone to get them out.
↑In Ant-Man and the Wasp, several moments are shown from Ava Starr's past at S.H.I.E.L.D.. Hannah John-Kamen was 28.05 at the middle of filming and should not be playing Starr at an age any younger than ⅔ of her actual age, so 18.70, meaning, based on Starr's approximated date of birth (see 1980s references), that the scenes should be after April 26, 2007. One moment appears to say "01-8 Thu", suggesting it is Thursday, January 8, 2009. Evenly distributing between these two dates, the first set of scenes should be approximately September 29, 2007, March 4, 2008, and August 7, 2008, before then January 8, 2009. Then after that, the remaining scenes are between then and the fall of S.H.I.E.L.D. on January 12, 2014 (see 2014 references). Evenly distributing again, the remaining scenes should be January 9, 2010, January 11, 2011, January 12, 2012, and January 12, 2013.
↑In The Avengers, on May 2, 2012, Natasha says, "You've been more than a year without an incident." This fits with Bruce's British Columbia incident being July 2010, and then "more than a year" back from May 2, 2012 would imply around 13½ months, roughly March 18, 2011.
↑In Gunner, Frank Castle, Sr. says his son was "barely 8 years old" when he returned from one his tours. Frank, Sr. is approximated to have done a military tour October 2006-January 2008 and another September 2013-April 2015. Frank Castle, Jr.'s approximate age would put him turning 8 somewhere between these tours, so we must approximate another another tour in between. The midpoint between is November 2010, and this tour is said to have been cut short, so likely 14 months or so instead of the usual 15 (as mentioned in Crosshairs), suggesting approximately April 2010-June 2011. With this, Frank, Sr. would have returned in June 2011, and if Frank, Jr. was "barely 8", he would have been born around June 2003. However, Lisa Castle, his older sister, was born in June 2003 (see other references), so the earliest Frank Jr. would have been born realistically is June 2004. This earliest realistic month of birth should be taken, to be as close as possible to the ideal. This would then mean Frank, Sr.'s tour ended around June 2012, so started around April 2011.
↑ 13.013.113.213.3The beginning of Thor: The Dark World Prelude picks up a while after the end of Thor, with the universe still shifting as the inhabitants of numerous realms realize that the Bifrost is gone. It then goes to "one year later", to the beginning of The Avengers. With it seeming like it has not been more than several months since the Duel at the Bifrost Bridge, together with the fact that it is a year before April 30, 2012, this places the opening of the comic around April 14, 2011.
↑ 24.024.124.224.3In Iron Man 3 Prelude, it is shown as beginning a while after Iron Man 2, with the damage from the Expo having been cleared up and Stark Tower having been fully planned, laid its foundations, and several levels into its construction. It then jumps to 2 months later, Mumbai, then 3 months later, Afghanistan, then 2 months later, Sudan, then 3 months later, Hong Kong, and this is shown to be the date of the Battle of New York, May 4, 2012. 3 months back from there would put Sudan around February 2012, 2 months further back would put Afghanistan around December 2011, 3 months further back puts Mumbai around September 2011, and a final 2 months back places the beginning in July 2011. This allows plenty of time, just over a year, for the Expo to be cleared completely and for the planning, foundations, and beginning of construction of Stark Tower. Several months prior to the beginning of the comic, work would have begun on the tower, around December 2011.
↑ 30.030.1The ending of The Avengers: Iron Man Mark VII is set a while after the end of Iron Man 2, a little while before The Avengers, as it is just as Stark begins work on the new idea for his Mark VII suit. It can be assumed that it is about two thirds of the way between the last we see of Stark on June 2, 2010 and the first we see of him in The Avengers on May 2, 2012, so around September 11 and 12, 2011.
↑ 32.032.132.232.332.432.5The timeline placement for the modern day placement of Captain America: The First Avenger comes from reasoning out the evidence to find what fits best.
In Captain America: The First Avenger, it is said that Steve has been asleep for "almost 70 years". In The Avengers, Steve says, "I slept for 70 years." The 70 can easily be simply interpreted as a rounded decade, and this is corroborated by what he says in Spider-Man: Homecoming, "slept for 65 years." This is more specific than the 70, so overall it seems that the suggestion is that he slept for around 66¾ years. With him going into the ice in March 4, 1945, this would imply that he woke around December 2011. In the Fury's Big Week comic, it is shown that Steve was found "one year later" after Day 7 of Fury's Big Week, which is June 4, 2010. This would imply that he woke around June 2011. The general, approximate real time setting of the Marvel Cinematic Universe would suggest that he woke around July 2011. In The Avengers, when Steve is brought into the mission on May 2, 2012, it seems he has been awake only a few months, implying that he woke around late 2011-early 2012.
The best solution possible, to satisfy the most evidence with the most importance possible, is reasoned out as the modern day events of Captain America: The First Avenger being set from October 5-8, 2011. To see a full, detailed description, calculation, and explanation of the reasoning, see here.
↑In The Dark Hearts of Men, a flashback is shown of Billy Russo and Frank Castle playing a game of "down the line", seemingly while on a military tour. They do not look much younger than in the present events (2018), so should be a late tour. It should not be the 2013-2015 Cerberus tour, given the horrible nature of that tour and jovial nature of the scene, so can be taken to be the tour before that, approximated to April 2011-June 2012 (see other references). Therefore, approximating with the middle of the tour, it can be estimated as November 15, 2011.
↑ 42.042.1In A Duel of Iron, Walker says she was freed after "22 months". On Marvel Television Live Auction Lot #886: Mary Walker's Classified Papers, it says Walker "served 8 years in various locals" before being "captured and held in isolation". Taking Alice Eve's age at the time of filming and working back from the setting, Mary Walker would have been born around September 1981. Given that she then could have joined the army no earlier than September 1998, the earliest she could have been kidnapped then would be January 1, 2006 (and calling it "8 years" in the general sense of "2006 - 1998 = 8") making the middle of her imprisonment roughly early December 2006 at the earliest. In Citadel on the Edge of Vengeance, it is said that Walker's escape was "years ago", making it roughly late 2015 at the latest, so the middle of her imprisonment roughly January 2015 at the latest. Using the mid-point of this window to approximate, the middle of her imprisonment can therefore be calculated to be roughly December 21, 2010, making her imprisonment roughly January 21, 2010-November 21, 2011. The specifics of the calculation can be found here.