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The time duration from 11pm to 7pm is exactly 20 hours, which equals 1200 minutes or 72000 seconds.
11pm to 7pm spans 20 hours. This period is during the late night hours when many people are asleep or getting ready for bed.
The calculator above automatically sets the times to 11pm (23:00) and 7pm (19:00), 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.