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21:59 time means 09:59 PM

21:59 is pronounced as: "twenty-one fifty-nine" o’clock

2159 in military time is 09:59 PM in regular time


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24-hour to 12-hour conversion


Our "Military time converter" is the perfect tool to convert time from a 24-hour system to a 12-hour system. Try it above. Enter both the "Hours" and the "Minutes" boxs in the form, then click "convert to 12-hour". After that, you can see the result.

The 24-hour system (it's called the Military system) is larger than 12:00. And it starts at 00:00 and ends at 23:00. 00:00 means 12:00 midnight, and 23:00 means 11:00 PM. (Note: 24:00 and 00:00 are the same time).



How was 21:59 converted to 09:59 PM ?


1. Step One: To convert 21:59 (twenty-one fifty-nine) to 12-hour, firstly, we didn't convert the minutes, we leave it. In our case it will be ( :59 fifty-nine ). and we just convert the hours.


2. Step Two: If the number of hours on military time (24-hour system) that we need to convert it, is less than 12:00, it will be the same on regular time (12-hour system).

In our case, It's 21 (nine), so we subtract 12 from 21 then add PM like ( 21 - 12 ). It will be 9 PM. (9 PM means 9 in the noon).

The final result is:09:59 PM ( In words: nine fifty-nine in the noon ). Look at the chart below.



Military Time (24-hour system)
24-Hour 12-hour 24-Hour 12-hour
00:59 Midnight 12:59 Noon
01:59 1:59 a.m. 13:59 1:59 p.m.
02:59 2:59 a.m. 14:59 2:59 p.m.
03:59 3:59 a.m. 15:59 3:59 p.m.
04:59 4:59 a.m. 16:59 4:59 p.m.
05:59 5:59 a.m. 17:59 5:59 p.m.
06:59 6:59 a.m. 18:59 6:59 p.m.
07:59 7:59 a.m. 19:59 7:59 p.m.
08:59 8:59 a.m. 20:59 8:59 p.m.
09:59 9:59 a.m. 21:59 9:59 p.m.
10:59 10:59 a.m. 22:59 10:59 p.m.
11:59 11:59 a.m. 23:59 11:59 p.m.


21:59 Clock in different Time Zone

See, The 21:59 time in the other military time zones. Look at the table below.


Time Zone UTC offset 12-hour 24-hour
Yankee UTC-12 09:59 AM 09:59
X-ray UTC-11 10:59 AM 10:59
Whiskey UTC-10 11:59 AM 11:59
Victor UTC-9 12:59 PM 12:59
Uniform UTC-8 01:59 PM 13:59
Tango UTC-7 02:59 PM 14:59
Sierra UTC-6 03:59 PM 15:59
Romeo UTC-5 04:59 PM 16:59
Quebec UTC-4 05:59 PM 17:59
Papa UTC-3 06:59 PM 18:59
Oscar UTC-2 07:59 PM 19:59
November UTC-1 08:59 PM 20:59
Zulu UTC±0 09:59 PM 21:59
Alpha UTC+1 10:59 PM 22:59
Bravo UTC+2 11:59 PM 23:59
Charlie UTC+3 12:59 AM 00:59
Delta UTC+4 01:59 AM 01:59
Echo UTC+5 02:59 AM 02:59
Foxtrot UTC+6 03:59 AM 03:59
Golf UTC+7 04:59 AM 04:59
Hotel UTC+8 05:59 AM 05:59
India UTC+9 06:59 AM 06:59
Kilo UTC+10 07:59 AM 07:59
Lima UTC+11 08:59 AM 08:59
Mike UTC+12 09:59 AM 09:59