-
The time duration from 4am to 4pm is exactly 12 hours, which equals 720 minutes or 43200 seconds.
4am to 4pm spans 12 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 4pm (16:00), but you can adjust the date or add seconds for more specific calculations.