How to write the time | Britannica Dictionary
https://www.britannica.com/dictionary/eb/qa/how-to-write-the-time
WEB11:30am. In addition, when writing the times 1:00 pm, 2:00 pm, etc., it is perfectly acceptable to omit the zeroes and write 1 pm, 2 pm, instead. Finally, note that while in the US we use a 12-hour clock, some countries use a 24-hour clock, or military time.
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