What is the Full Form of AM and PM?

The full form of AM is Ante-Meridiem. The 12-hour period on a calendar that comes before Noon is referred to as “AM” in Latin. The term anti-meridiem means before noon. It is a unit of the time standard and corresponds to the 12-hour clock. The 12-hour clock separates a day’s time cycle into two parts. Ante Meridiem, or AM, is the name of the initial stage. Ante Meridiem, or AM, refers to the period of time between midnight and noon.

The full form of PM is Post Meridiem. PM stands for post-midday. It is yet another conventional time unit connected to the 12-hour clock. The period is divided into two equal periods, the first period and the second period, according to the 12-hour clock system. The second period is known as PM, or Post Meridiem. PM or complete form The time displayed in Post Meridiem is from Noon to Midnight.

Also Read: What is the Full Form of WMO?

Uses of AM and PM

There are two different types of clocks: ones that run on 12 and 24 hours. Since a day consists of 24 hours, it is simple to tell the time in the format of 24 hours without using any units. Each number is, however, repeated twice daily in a pattern of 12 hours. 

Although it’s not much of a problem when you’re telling the time because you can easily discern whether it’s day or night. However, if you need to record the time of an event for future use, you must specify whether it is 1 o’clock in the morning or 1 o’clock in the afternoon. The a.m. and p.m. units are applied here.

Also Read: What is the Full Form of DSP?

Fun Fact About AM and PM

It might be interesting to know that the idea of a 12-hour clock is not new. Egyptians and Mesopotamians utilised it in simple forms even in earlier times. Examples include the Egyptian water clock for use at night and the Egyptian sun-dial clock for use during the day, both of which were discovered in a pharaoh’s tomb. 

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