It all depends. Generally LCC’s like to have that overnight buffer so that MX and cleaning can be completed and also to enable the operation to start a fresh the next day.
With my carrier there are some exceptions. In summer my base has 0330 arrival and that, in theory, could be Airbourne again by 0630. There are also some nightstops across the network which obviously stray into the following day.
Crew disembark minutes after the last passenger.
Wizz seem to be different with quite a few sectors that can be classed as overnights/red eyes.