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20:30 in 12-Hour Time

20:30 is 8:30 PM.

Written 2030 in military time and said “twenty thirty”. Going the other way, 8:30 PM is 20:30.

The 20:00 hour is the hour theatre curtains go up and evening flights leave.

24-hour clock

20:30

12-hour clock

8:30 PM

Said aloud: “twenty thirty” on the 24-hour clock, “half past eight in the evening” on the 12-hour one.

8:30 PM

Why 20:30 converts the way it does

This is the half of the day that actually changes. From 13:00 to 23:00, subtract 12 to get the 12-hour hour and label it PM: 20 − 12 = 8, so 20:xx is 8:xx PM. Going the other way, add 12 to any PM hour except 12 PM itself.

The minutes are the same on both clocks — the :30 never moves — and 20:30 is in the evening, which is the information the AM/PM label is carrying.

Need this time to actually do something? Set an alarm for 8:30 PM, or use the timer to count a length of time instead of waiting for a clock time.

Nearby times

Common questions

What is 20:30 in 12-hour time?
20:30 is 8:30 PM. The minutes are unchanged; the hour is 20 − 12 = 8, and it takes PM.

What is 8:30 PM in 24-hour time?
8:30 PM is 20:30, written 2030 in military time.

How do you say 2030 out loud?
In military time it is said "twenty thirty". On a 12-hour clock the same moment is "half past eight in the evening".

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