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The time duration from 4am to 12am (midnight) is exactly 20 hours, which equals 1200 minutes or 72000 seconds.
4am to 12am (midnight) spans 20 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 12am (00:00), but you can adjust the date or add seconds for more specific calculations.
When the end time is earlier than the start time, the calculator automatically sets the end date to the next day.
