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What Does AM And PM Stand For

‘What’s the time?’ you may ask someone and the person may certainly reply with an ‘AM or PM’ as a ‘suffix’, but what in actuality does AM And PM Stand For? what does AM and PM means? If you desire to know the meaning of these two acronyms, kindly read on to find out the meaning of AM and PM.

am and pm

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what does am and pm stand for?

AM is an abbreviation for ANTE MERIDIEM. In Latin, it means ‘before midday’ or ‘before noon’.

An example: 10.00 a.m. is 10 o-clock in the morning. With a 24 hour time this is 10:00.

PM is an abbreviation for  Post Meridiem, In Latin, it means “After Midday” or “After Noon”.

An example: 10.00 p.m. is 10 o-clock in the evening. With a 24 hour time this is 22:00.

In countries that majorly uses English language a 12 hour time is used solely. So, in the sense of writing, the time has just 12 hours but there is in one day, 24 hours. The main determinant to scale if a time penned down is in the evening or morning period of the day is through the AM/PM timescale. Majority of countries in Europe mostly uses the twenty-four hour written time where 0-12 hours signifies morning period while 13-24 hours signify afternoon and evening period of the day.

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Converting 12-Hour to 24-Hour Format

A 24-hour clock, sometimes referred to as military time, states the time according to the number of hours that have passed since midnight. Starting at midnight, hours are numbered from 0 to 24, removing the need for designations like am and pm. For example, at 23:00, 23 hours have passed since the beginning of the current day.

To convert am or pm time to the 24-hour format, use these rules:

  • From midnight to 12:59 am, subtract 12 hours.
    12:49 am = 0:49 (12:49 – 12)
  • From 1 am to noon, do nothing.
    11:49 am = 11:49
  • From 12:01 pm to 12:59 pm, do nothing.
    12:49 pm = 12:49
  • From 1:00 pm to midnight, add 12 hours.
    1:49 pm = 13:49 (1:49 + 12)

Here’s how to convert time on a 24-hour clock to the 12-hour system:

  • From 0:00 (midnight) to 0:59, add 12 hours and use am.
    0:49 = 12:49 am (0:49 + 12)
  • From 1:00 to 11:59, just add am after the time.
    11:49 = 11:49 am
  • From 12:00 to 12:59, just add pm after the time.
    12:49 = 12:49 pm
  • From 13:00 to 0:00, subtract 12 hours and use pm.
    13:49 = 1:49 pm (13:49 - 12)

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