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The time duration from 8pm to 11pm is exactly 3 hours, which equals 180 minutes or 10800 seconds.
8pm to 11pm spans 3 hours. This period is during the evening or night hours when many people are winding down their day or engaging in leisure activities.
The calculator above automatically sets the times to 8pm (20:00) and 11pm (23:00), but you can adjust the date or add seconds for more specific calculations.