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The time duration from 4pm to 9am is exactly 17 hours, which equals 1020 minutes or 61200 seconds.
4pm to 9am spans 17 hours. This period is during the afternoon hours when people are typically active and working.
The calculator above automatically sets the times to 4pm (16:00) 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.
