When something very exciting happens one day, and the next exciting even doesn't happen until next week, then you just say "a few days later" and it skips over all of that boring time!
Cartman: Oh, no, the bad guy got away!
Timmy: Timmy!
A FEW DAYS LATER...
Cartman: Look, Timmy, there's the bad guy again!
Timmy: Timmy!
If you have a dinner date at 6pm, a second meeting, at 8 is a "late date". Or as a verb -- "did you just late date me" meaning you have another date after the one with me.