AM and PM: What Do They Mean? - timeanddate.com
What Do AM and PM Stand For? By Aparna Kher and Konstantin Bikos Some countries use the 12-hour clock format with “am” and “pm” labels. What do these abbreviations mean? Is midnight am or pm?
中文的上午和下午与am pm时间区间理解！？ - 知乎
第一个时间段指定为上午，标记为am，它从午夜运行到中午。 第二个时段，标记为 pm，涵盖从中午到午夜的 12 个小时。 AM = Ante meridiem : 中午之前 PM = Post meridiem : 中午之后 12小时和24小时 …
「午前」的英文缩写是 am，还是 a.m.？ - 知乎
Oct 15, 2019 · 其实，这个不绝对。 要看语言环境，上下文，只要不被误解成别的含义，大小写或者带不带点，就都可以。 am/pm 用的时候一定要紧跟时间，不能机械地去替代morning和afternoon。 比如 …
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12 小时制中，pm / am 什么时候该用大写，什么 ... - 知乎
12 小时制中，pm / am 什么时候该用大写，什么时候用小写？
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Military Time: The 24-Hour Clock
At 12 am (midnight), the hour count is reset to 00. See the full conversion chart Note that military time doesn’t use a separator between the hours and the minutes. So, 01:00 is written as 0100 and 23:00 …