24-hour clock
00:40
What Time Is 00:40?
00:40 in 24-hour time is 12:40 AM on a 12-hour clock.
12-hour clock
12:40 AM
Your local time now
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12:40 AM is a clock reading, not a countdown target. Use a how-long-until page to time it.
Countdown to this clock time: how long until 12:40 AM