What time does a police officers shift start?

There are no standard shift times adhered to nationwide - all departments and agencies set their own shift rotation schedules. Some work three 8-hour shifts in a 24 hour period - some work two 12-hour shifts - some work an overlapping 10-hour shift schedule.

Additionally - many large departments stagger their relief times broken into 2 periods so that the entire patrol force is not off the street at the same time. ALSO - many specialized units are timed to be on the road at the time of shift change of the patrol force.