Difference between AM and PM

Saturday, July 6, 2019

If you live in the United States, Canada, or Australia, you use a 12-hour system for telling time.
If you look at this clock it is 7 o’clock.
However, is this 7 o’clock in the morning or 7 o’clock at night. This is where am and pm help.
The 12-hour system divides the 24 hours of a day into two periods lasting 12 hours each.
The first 12-hour period is designated as am. It runs from midnight to noon. The second period, marked pm, covers the 12 hours from noon to midnight.
AM comes from the Latin phrase ante meridiem, which translates to, before midday
and p.m. from the Latin phrase post meridiem which translates to past midday.
There are 24 hours in a day, this requires the hour hand to pass the 12 twice.

Most often midnight is considered the start of a new day.
Midnight is classified as 12:00 AM.
The hours after midnight and before noon are written with am
These 12 hours start late at night then transition to early morning.
3 am is late at night, but 7 am is when many people are waking up.
12 pm is considered midday or noon.
The hours between noon and midnight are written with pm.
These hours start during sunlight and end in darkness

Let's apply what we have learned

Drew wakes up in order to go to school at 7:00 o’ clock
Would you use am or pm?
Drew wakes up after midnight and before noon so you would use am.

Adam’s favorite restaurant stops serving dinner at 8:00 o'clock
Would you use am or pm?

Dinner time is after midday or noon but before midnight so you would use pm.

The sun rises at 6:00 and sets at 7:00 Which would you use?
The sun rises after midnight and before noon so use 6:00 am and the sun sets afternoon and before midnight so use 7:00 pm.


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