Is there an easy way / command to determine tomorrow's date in Unix?

Basically, I need a way to run a shell on the last Thursday of the Month, only if tomorrow, Friday, is in the same Month. So if Thursday Falls on the 28, 29 or 30th... is there a command that will tell me what date + 1 day is?

I know I could probably build a case statement with all the Months of the year, and account for Leap Year, but thought there might be an easier way.

Bob.

what O/S
with gnu date