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The time duration from 3pm to 9am is exactly 18 hours, which equals 1080 minutes or 64800 seconds.
3pm to 9am spans 18 hours. This period is during the afternoon hours when people are typically active and working.
The calculator above automatically sets the times to 3pm (15:00) and 9am (09:00), 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.
