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The time duration from 12pm (noon) to 1am is exactly 13 hours, which equals 780 minutes or 46800 seconds.
12pm (noon) to 1am spans 13 hours. This period starts at noon and covers part of the daytime when people are typically active and working.
The calculator above automatically sets the times to 12pm (12:00) and 1am (01:00), 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.