How do I add AM and pm to the time?

Starting from the first hour of the day (0:00 / midnight to 0:59), add 12 hours and AM to the time: From 1:00 to 11:59, simply add AM to the time: For times between 13:00 to 23:59, subtract 12 hours and add PM to the time: If this article was helpful, tweet it.

Is AM and PM used when using a 24 hour clock?

No, the AM and PM designations are not used when using a 24-hour / military clock. It’s definitely not used. It’s about as wrong as saying it’s “nought past nine pm in the evening”! It would actually be misleading, because how would you write a time in the morning?

How do you add 12 hours and minutes to time?

Starting from the first hour of the day (12:00 AM or midnight to 12:59 AM), subtract 12 hours: From 1:00 AM to 12:59 PM, the hours and minutes remain the same: For times between 1:00 PM to 11:59 PM, add 12 hours: 11:59 PM = 23:59. Starting from the first hour of the day (0:00 / midnight to 0:59), add 12 hours and AM to the time:

What is the difference between 12 am and 12 pm?

When using a 12-hour clock, then, these terms clarify the time we have in mind (e.g., 12 AM is midnight, whereas 12 PM is midday). This is not necessary when using a 24-hour clock.

What is the conversion between 12 Hour and 24 hour clock systems?

The table below shows the conversion between the 12 hour and 24 hour clock systems: 12 hour clock 24 hour clock 11:00 AM 11:00 12:00 PM 12:00 01:00 PM 13:00 02:00 PM 14:00

What is the origin of the 24-hour day?

The 24-hour day concept comes from the ancient Egyptians. They divided the day into 10 hours with devices like shadow clocks and then added one hour at each end (one for twilight and one at the end of the day). Later, a T-shaped bar was made by Egyptians, which was calibrated to divide the time between sunrise and sunset into 12 parts.

What is the difference between AM and PM?

The abbreviations AM and PM are from Latin: The day runs from midnight to midnight and is divided into 24 hours from 0 (midnight) to 23. Time is shown in hours and minutes since midnight. Starting from the first hour of the day (12:00 AM or midnight to 12:59 AM), subtract 12 hours: From 1:00 AM to 12:59 PM, the hours and minutes remain the same: