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The time duration from 7am to 4am is exactly 21 hours, which equals 1260 minutes or 75600 seconds.
7am to 4am spans 21 hours. This period is during the early morning hours when many people are beginning to wake up or start their day.
The calculator above automatically sets the times to 7am (07:00) and 4am (04:00), 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.
