In terms of usage, you can use A.M. and P.M. for both formal and casual settings; it depends on the context. In a more formal setting, you might use them in a business meeting, like, “The meeting starts at 9 A.M.” In a casual setting, you might use them in a text message to a friend, such as, “I’ll be home by 6 P.M.”

2021年2月3日 · Use the abbreviations a.m. and p.m. to indicate exact time. Use a.m. to refer to a time of day before noon, and p.m. to speak of a time between noon and midnight. Use numerals or figures instead of words to denote time with a.m. and p.m. (eleven / 8 a.m.) in formal texts.

When emphasizing an exact or precise time, the abbreviations “a.m.” and “p.m.” are used. These two abbreviations stand for the Latin terms “ante meridiem” and “post meridiem,” which literally mean before noon and after noon. There are a few generally accepted ways to write these abbreviations in your writing.

2023年12月22日 · 00:00 is pronounced “zero-hundred” and represents midnight, while 1200 is pronounced “twelve-hundred” and represents noon. Anything between 00:01 and 11:59 is “a.m.” Anything between 12:01 and 23:59 is “p.m.”

2024年9月5日 · Learn the correct usage of "I reached on 9am" and "I reached at 9am" in English. Discover differences, examples, alternatives and tips for choosing the right phrase.

First of all, AM and PM have a range of acceptable formats, such as: A.M., P.M., am, pm, a.m., and p.m. It is your choice whether you wish to separate the AM or PM from the time of day with a space or not. Furthermore, some choose to write just the hour (e.g. 9pm), while others include the semicolon and minutes (e.g. 9:00pm).

'At 9 am' specifies a time, while 'at university' specifies a location. Therefore, the choice between them depends on whether you want to indicate a specific time or a specific place. This phrase is correct and commonly used to specify a particular time, 9 am. Use 'at 9 am' to indicate a specific time, such as a meeting or event scheduled for 9 am.

2024年3月28日 · Writing the time correctly is important for clear communication. When you write time, use numbers and be specific about the part of the day. For example, 8:00 AM for morning times and 3:00 PM for afternoon or evening times. If you’re mentioning a time on the hour, it’s correct to write it as 4:00, not just 4.

2024年3月23日 · Both phrases are correct, but they are used in different contexts. 'I come by 9 am today' is used when referring to a future event or plan, while 'I came at 9 am today' is used when talking about a past event that has already happened.

AP Style time of day holds that the time descriptors “ante meridiem” (before noon) and “post meridiem” (after noon) should be abbreviated with lowercase letters and with periods (a.m. and p.m.). AP warns against redundancies in your writing such as“10 a.m. this morning.” For instance, Wrong: We have breakfast planned for 10 a.m. Monday morning.