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The time duration from 2am to 4am is exactly 2 hours, which equals 120 minutes or 7200 seconds.
2am to 4am spans 2 hours. This period is during the early morning hours when most people are asleep.
The calculator above automatically sets the times to 2am (02:00) and 4am (04:00), but you can adjust the date or add seconds for more specific calculations.