During the personal training traffic stop the video time stamp indicates its 9:50 in the morning, but based on the sunlight its very clearly just after dawn or just before dusk.
The show depicts the Reno Sheriff's Department. In reality, the city of Reno is served by its own Reno Police Department. Reno is within Washoe County, Nevada, which is served by the Washoe County Sheriff's Office. Additionally, the show occasionally depicts the Sparks Sheriff Department. Sparks is also another incorporated city within Washoe County, served by its own Sparks Police Department.