As you may have noticed a lot of flights seem to be lacking from airports on flight aware and I found an explanation...

"The FAA has removed the 24 hour in advance information for regularly scheduled flights from the ASDI feed.  Expect to see flights for smaller carriers to show up 2 hours in advance of the flight. Most major airlines are covered by direct feeds that will continue to provide day-in-advance schedules."

Can't decide if this is a good or bad thing, it does declutter a lot of the regional jets from the pages though.