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The time duration from 7pm to 4pm is exactly 21 hours, which equals 1260 minutes or 75600 seconds.
7pm to 4pm spans 21 hours. This period is during the evening hours when many people are finishing their workday and heading home.
The calculator above automatically sets the times to 7pm (19:00) and 4pm (16:00), 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.
