The passage of time in-game is vastly accelerated with respect to real time. Heroes and Villains may encounter different aspects of the game depending on in-game time in addition to the graphical representation to day and night.
One real time hour is equivalent to two in-game days, with midnights occurring on the hour and on the half hour. The chart below compares real time (green) with the equivalent in-game time (blue). The servers syncronize their clocks with UTC.
A number of events happen in the game between certain in-game times, including the following:
06:00 to 20:00
Real time: :08 to :25 and :38 to :55
21:00 to 06:00
Real time: :26 to :38 and :56 to :08