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The time duration from 11am to 9am is exactly 22 hours, which equals 1320 minutes or 79200 seconds.
11am to 9am spans 22 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 11am (11:00) 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.