When should invites go out???

I keep having same argument with FMIL of when invites should go out. Wedding is THURSDAY July 15th with RSVP date of JUNE 1st. I wanted them back early so I wasn't scrambling as school finishes and then 4th of July weekend.

I'm hoping to have them all back by June 15th (or at least calls those who haven't sent them). The hotel block is up June 14th and even though we sent out save-the-dates almost a year in advance i have heard a few people already tell me they probably can't go now. When do u think they should go out?????? Thanks in advance

getting them all back june 15th is outta the question... sorry!
i would send em out the last week of april.... gives em a lil over a month to respond.

I originally wanted the middle of April because it is a Thursday and if people would want to leave work early or have off Friday they have more time (wedding over at 11:30pm). I guess the end of April will be better.

I know I probably will have some out til the end of June but whatever i can get back earlier will help because I know the seating chart will be another fight. Thanks guys