As we move closer towards the production start date of the sequel X-Men: Days of Future Past, details are starting to trickle out regarding the First Class follow-up.  We know that director Bryan Singer is bringing back a bounty of actors/characters from the previous X-Men films, and now it looks like the time period for Days of Future Past has been revealed.  According to a casting call, the majority of the film takes place in the year 1973.  That’s a decade after the events of First Class, and it also means that previous director Matthew Vaughn’s idea of opening the movie with the JFK assassination seems unlikely.  Hit the jump for more details.The casting call for the breakdown reveals that the majority of the events in Days of Future Past take place in 1973, so we can probably assume that we won’t be seeing too much of Hugh Jackman, Anna Paquin, Shawn Ashmore, etc. as their characters will likely only appear in scenes relating to the film’s dystopian future.  The casting call also lists the production schedule as lasting from mid-February to at least August, so this will be one very long shoot.Read the casting call below via CBM.  X-Men: Days of Future Past opens on July 17, 2014.