-
The time duration from 4am to 10pm is exactly 18 hours, which equals 1080 minutes or 64800 seconds.
4am to 10pm spans 18 hours. This period is during the early morning hours when most people are asleep.
The calculator above automatically sets the times to 4am (04:00) and 10pm (22:00), but you can adjust the date or add seconds for more specific calculations.