AM and PM are abbreviations that tell us whether the time occurs in the morning or in the afternoon/evening.
In the AM/PM system of time, a 12-hour clock is used. That means that the morning goes up until 12:00 noon and it starts over again with 01:00 and goes through 12:00 midnight.
In contrast, a 24-hour clock does not start over after 12:00 noon. The next hour (which we normally think of as 1:00 PM) is 13:00, then 14:00 etc. Time goes all the way up until 24:00 midnight which can also be called 00:00 because it is the start of the next day.
What is 7:00 PM on a 24-hour clock?
7:00 PM is after noon, so this is 7 hours past 12:00.
So we will add: 12 + 7 = 19
It is 21:10 hours. What time is it on a regular 12-hour clock?
It is past noon, so let's subtract 12 hours to see how far past noon it is.
21 - 12 = 9, so it is 9:10 (The minutes won't change),
It is PM because it is after noon.
Answer: 9:10 PM
On a 24-hour clock, it is 06:55. What time is it on a 12-hour clock with AM/PM?
Since it's less than 12:00, the time will not change.
This is before noon, so it is AM
Answer: 6:55 AM
What is 12:05 PM on a 24-hour clock?
12:05 PM is just barely in the afternoon, but we don't need to change the time at all because it is hasn't yet started over with 1:00.
Hence, the answer is: 12:05
AM/PM & 24-Hour Clock