This is a timeline of events that occurred during the 1950s.
Arnim Zola and some former HYDRA agents track down Bucky Barnes, who survived the drop and was taken into custody by Soviet Union soldiers. Since that moment, they had kept Barnes frozen and alive, but missing an arm. Once he was found by Zola and his agents, they take him into their custody.
A doctor named Jonah visits the Magistrate preacher in infectious diseases quarantine, where he has grey flakes overcoming his body, causing him to grow weaker. The Magistrate announces that what he is about to do will cause Dr. Jonah to struggle for personality dominance, but that he will ultimately win, confusing Jonah. The Magistrate, however, grabs Jonah and transfers his essence to Jonah's body, causing a flash of light.
↑ 24.024.1Based on a weighted calculation from John Kani's age at the time of filming Captain America: Civil War and Black Panther and working back from his scenes, and from Atandwa Kani's age at the time of filming Black Panther and working back from his scenes - reasoned against Sterling K. Brown's age at the time of filming Black Panther and working back from his scenes, considering that T'Chaka is older than N'Jobu. The calculations for these dates and the dates that flashbacks are set are all relative to each other, and can be found in detail here.
↑During Carter's interview in Captain America: The Winter Soldier, the interview says that the two of them "spoke a great deal yesterday about the SSR, early days of S.H.I.E.L.D.". With this line being said on June 21, 1953, the interviewer would be alluding to something that happened on June 20, 1953.
↑In Guardians of the Galaxy Vol. 2, Yondu says that he was sold into slavery as an infant and then spent 20 years in slavery, before Stakar Ogord freed him. Based on Michael Rooker's age when filming both movies, then working back from when both movies are set and taking an average, Yondu would have been born around January 1955, and so would have been sold around February 15th. 20 years later, he would have been freed around April 2, 1975. This fits with him then spending many years collecting Ego's children from 1975 up to any point between 1979 and 1988, then the final one, Quill, in 1988.
↑In Wig Out, it is said that Jackson Dillard was "8 years older" than Mariah. With Mariah's date of birth approximated to December 9, 1963 (see 1960s references), it can be approximated that Jackson was born around December 9, 1955, if not more generally meaning "1963 - 1955 = 8" then any point in 1955, approximating as mid-1985. Putting more weight in the specific December 9, 1955 but considering the possibility of generally 1955, a weighted average gives roughly October 17, 1955 - or, less specifically, October 1955 for Jackson's date of birth.
↑In AKA Sole Survivor, it is shown that Alisa Jones was born in "1956" and seemingly died aged "44" in "2000". Her apparent date of death is April 13, 2000 (see 2000s references), meaning she was born between January 1, 1956 and April 13, 1956, making her date of birth approximately February 1954.
↑Based on Dikran Tulaine's age at the time of filming Nakazat, working back from the setting of the episode, Nikolai Poloznev would have been born around June 1956.
↑In Scar Tissue, on May 2, 2018 (see 2018 references), Frank Castle says Arthur Walsh is "about 60 years old", implying he was born around November 1957. Given that actor Thomas G. Waites was 63 at the time of filming, it can be taken that he is a little older, born around September 1957.