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The time duration from 10am to 12am (midnight) is exactly 14 hours, which equals 840 minutes or 50400 seconds.
10am to 12am (midnight) spans 14 hours. This period is during the morning hours when most people are active and starting their workday.
The calculator above automatically sets the times to 10am (10:00) and 12am (00:00), 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.