How To Write Pm
am, pm — (more usual in British style of writing: 12am, 12pm) a.m., p.m. — (most common) AM, PM — (can be confused with radio frequencies, e.g. 95.8 FM, 1044 AM) A.M., P.M. 24-hour clock style:— 01:00 hours, 13:00 hours; French style:— 01h30, 13h00; Choice of the above depends on the style preferred by your organisation.
Also 4 PM or 4 P.M. (with PM in small capitals) Garner's Modern English Usage: 4 p.m. or 4 PM (with PM in small capitals) The Gregg Reference Manual: 4 p.m. or 4 P.M. (with PM in small capitals) Whatever style you choose, be consistent. I always use lowercase letters: 4 p.m. Pam's coworkers were apparently arguing about whether to include the zeros.
There are two primary methods of showing the time. First there's the 12 hour clock that uses AM and PM, and then there's the 24 hour clock. Most countries prefer the 24 hour clock method, but the 12 hour clock is widely used in Latin America and English-speaking countries. In
11:30 am. 11:30 AM. 11:30 A.M. 11:30 a.m. 11:30am. 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.