PM means after noon. It covers the 12 hours from noon to midnight. Using numbers from 1 to 12, followed by am or pm, the 12-hour clock system identifies all 24 hours of the day. For example, 1 am is one hour after midnight, and 5 am is early in the morning; 5 pm is late in the afternoon, while 11 pm is one hour before midnight.

The 24-hour clock is a way of telling the time in which the day runs from midnight to midnight and is divided into 24 hours, numbered from 1 or 0 to 24 or 23. It does not use a.m. or p.m.

If the time is between 1:00 AM and 12:59 PM, 24 hour time is same as 12 hour time. If the time is between 1:00 PM and 11:59 PM, we add 12 hours to input time. Convert 12 hour time format to 24 hour clock time format, how to calculate 12h AM and PM clock time to 24h time including time conversion table.

There are two main ways to show the time: "24 Hour Clock" or "AM/PM": 24 Hour Clock: the time is shown as how many hours and minutes since midnight. AM/PM (or "12 Hour Clock"): the day is split into:

The meaning of AM and PM is the simple abbreviation of Latin phrases. In particular, AM stands for ante meridiem, which translates into English as ‘before midday’. Meanwhile, PM is post meridiem and means in English ‘after midday’. These abbreviations are used to identify the time in the 12-hour clock format instead of using 24 hours.

PM stands for Post-Meridiem, which means it is the time after the meridian line has crossed the Sun, or, the time between noon and 11.59 at night. The 12-hour clock method defines all 24 hours of the day using the numbers 1 to 12, followed by am or pm. 5 AM is early in the morning and 5 PM is late in the afternoon; 1 AM is one hour after ...

2024年7月17日 · 上午与下午的英文缩写分别是什么？上午与下午用英文简写分别为：PM、AM。具体介绍如下：一、PM指的是下午，post meridiem的缩写，指一天中的午后（即12：00：00～23：59：59）。例如：4：50 post meridiem，表示下午

This eventually evolved into the two 12-hour periods which are used today, one called "a.m." starting at midnight and another called "p.m." starting at noon. Noon itself is rarely abbreviated today; but if it is, it is denoted "m." [1] The 12-hour clock can be traced back as far as Mesopotamia and ancient Egypt. [7] .

So 1 PM in 24-hour format is 13:00, 2 PM is 14:00, and so on. All you need to do is add 12 to any time in the PM to get 24-hour format time. Here are all the hourly times in AM/PM and 24-hour format:

The period from 12 AM to 12 PM is the first half of the day, and the period from 12 PM to 12 AM is the second half of the day. Below is a table that shows the progress of time over the course of a day in both the 24 and 12-hour clocks. Note that midnight in the …