AM PM
AM and PM are Latin words that are used to reference time. AM and PM are the abbreviated terms for Ante meridiem and Post meridiem which means before noon or midday and afternoon or midday respectively. The initial 12hour period which lasts from midnight to noon is designated with AM while the next 12hour period which lasts from noon to midnight is designated with PM.
1.  AM and PM 
2.  Convert AM PM to 24 Hour Clock 
3.  Convert 24 Hour Clock to AM PM Clock 
4.  FAQs on AM PM 
AM and PM
Time is divided into hours, minutes, and seconds. Each day is 24 hours, each hour is 60 minutes, and each minute is 60 seconds. Example: 8:20 means 8 Hours and 20 Minutes. Time is displayed in two ways. The first is through a 24hour clock, and the other is through an AMPM clock. The abbreviation 'AM' stands for ante meridiem (before the meridian line has crossed the Sun or the time between midnight and 11.59 in the morning) PM stands for postmeridiem (after the meridian line has crossed the Sun or the time between noon and 11.59 at night).
The 12hour 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 midnight, and 11 PM is one hour before midnight. Ante meridiem is generally referred to as AM, am, a.m., or A.M whereas PM, pm, p.m., or P.M. are typically abbreviated post meridiem.
Convert AM PM Clock to a 24Hour Clock
We can convert an AMPM clock to a 24hour clock by subtracting 12 hours from the first hour of the day (midnight to 12:59 a.m.).
Example  Conversion to 24hour clock  Tips for conversion 

12:00 AM 
0:00 
The hours and minutes remain the same from 1:00 AM to 11:59 AM. 
3:17 PM 
15:17 
Add 12 hours for time which ranges from 1:00 PM to 11:59 PM. 
Convert a 24Hour Clock to AMPM Clock
It is possible to convert a 24hour clock to an AMPM clock by attaching 12 hours from the first hour of the day (0:00 / midnight to 0:59) and AM to the time.
Example  Conversion to AMPM clock  Tips for conversion 

0:40 
12:40 AM 1:55 AM 3:45 AM 
Simply add AM to the time, from 1:00 to 11:59 
16:55 21:45 13:00 
4:55 PM 8:45 PM 1:00 PM 
Subtract 12 hours and at the end add PM to the time for intervals between 13:00 and 23:59 
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Solved Examples on AM PM

Example 1: If it is 7 AM in a 12hour clock and Susie wants to convert it to 24 hour clock time, what is the time that she has to set in the 24hour clock?
Solution: The hours and minutes remain the same from 1:00 AM to 11:59 PM. Hence, 7 AM will be represented as 7:00 in the 24hour clock. 
Example 2: Martha took 20 minutes to finish a race that started at 8:20 am. What will be the time after she has completed the race?
Solution: Given, the race started at 8:20 AM, which means 8 hours 20 minutes.
The finishing time will be = 8 hrs 20 minutes + 20 minutes = 8 hrs 40 minutes = 8:40 am
Therefore, Martha will complete her race by 8:40 am. 
Example 3: Dale takes 15 minutes to cover the circumference of the park by his bicycle. If he starts at 8.30 am and takes 3 rounds at what time he will complete all 3 rounds?
Solution: Time at which he starts cycling = 8:30 am
Total time taken by him to reach 3 rounds = 3 × 15 = 45 minutes
Therefore, Dale will complete all 3 rounds at 9:15 am. 
Example 4: Convert 17:00 to 12 hour clock time by using AM PM units.
Solution: To convert 17:00 to 12 hour clock time, we subtract 12 hours and at the end add PM.
Therefore, on converting 17:00 to 12 hour clock we get, 5 PM.
FAQs on AM PM
What Do You Mean By AM and PM?
AM and PM are units to represent time in a 12hour clock. From midnight to 11:59 noon, the time is represented as AM, and from 12 noon to 11:59 midnight, it is represented as PM. AM means Ante Meridiem and PM means Post Meridiem.
What Time Is 11:59 PM?
11:59 is 11:59 + 12, that is 23.59 in 24hour clock.
Is PM Morning or Night?
PM is night as it starts from noon to midnight.
What Does AM PM Stand For?
The abbreviation 'AM' stands for antemeridiem (before the meridian line has crossed the Sun), And 'PM' stands for postmeridiem (after the meridian line has crossed the Sun).
How To Convert AM PM to 24 Hours?
While converting AM to 24 hours, the hours and minutes remain the same and during the conversion of PM to 24 hours, we add 12 hours and remove the units.
Are 8:00 AM and 8:00 PM the Same?
No, 8:00 AM and 8:00 PM are not the same. Since AM (ante meridiem) means before noon, so 8 AM corresponds to 8 o'clock in the morning whereas PM (post meridiem) means afternoon so it refers to any time after midday till midnight thus 8 PM corresponds to 8 o'clock in the late evening or night.
Is noon 12 AM or 12 PM?
12 PM is noon whereas 12 AM is midnight.
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