Though, there is a cutoff date to play your matches. Basically, you’ll have 6 days to play and report your match result. Schedules for the next week are generated and sent out every Monday for 6v6, and every Tuesday for Highlander. If you don’t submit your match scores before 9 PM Eastern on the ‘cutoff’ date, it will be considered a forfeit.
So basically, you can play your 6’s match between Monday at 11:00 PM – Monday at 8:00 PM. So long as you report your score before the 9 o’clock cutoff, you’re good to go for pretty any date.