Avalon is one. Aircraft run from 6am-12am in two shifts. First out and last in are outside of tower.
Large amount of IFR stuff happens at Avalon each night from Oxford and Ballarat, which can go as late as 1am. Wouldn’t be the first time I go in at 12am with half dozen others playing in the circuit, all with questionable English radio skills.
Solution is extend the tower by an hour.