Great question — answering as the UphillTech team:
Pulling from the The Comic Board Forum (and IM3 in movie references): December 31, 1999, Tony Stark learns about Extremis from Maya Hansen (Beginning of IM3) 2008, Tony Stark demonstrates the Jericho outside of Kabul, Afghanistan. (exact date unsure - Beginning of IM1) May 5, 2012, Battle of New York. (Avengers) December 27, 2012, With Stark's help, Potts' Extremis effects are stabilized. (End of IM3) September 24, 2013, Agents Fitz and Simmons discover the explosion which occurs was from a person, as well as that it comes from the Extremis within the Centipede. (First AoSHIELD episode) The AoSHIELD episodes are based after IM3. EDIT: After reading points in the comment made by Oliver_C, I...
Full answer by Pᴀᴜʟsᴛᴇʀ2: https://movies.stackexchange.com/a/15250 (CC BY-SA 4.0).
Need it done for your business? UphillTech.
