# Quick Answer: How do we calculate time afternoon on the 24 hour clock?

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In the 24-hour clock system we give the number of hours since the beginning of the day for the first two digits, and the number of minutes since the beginning of the hour for the last two digits. In this example, you have 12 hours in the morning + 3 hours in the afternoon which makes 15 since the start of the day.

## How do you calculate time after noon on a 24 hour clock?

24-hour clock

After midday, you simply add 12 to the the number of hours that have passed. For example: 3:00 p.m. is 3 hours after 12:00 p.m. (midday). 3 p.m. + 12 hours = 15:00. 8:30 p.m. is 8 hours 30 minutes after 12:00 p.m. 8 hours 30 minutes + 12 hours = 20:30.

## How would 2pm be shown on a 24 hour clock?

The 12-hour clock runs from 1am to 12 noon and then from 1pm to 12 midnight. The 24-hour clock uses the numbers 00:00 to 23:59 (midnight is 00:00).

What are the 12-hour and 24-hour clock?

12-hour clock 24-hour clock
1pm 13.00
2pm 14.00
3pm 15.00
4pm 16.00
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## What is 4pm on a 24 hour clock?

24-hour clock

24-hour clock 12-hour clock
14:00 2:00 p.m.
15:00 3:00 p.m.
16:00 4:00 p.m.
17:00 5:00 p.m.

## How do you calculate 24 hour time?

Add 12 to the hours between 1:00 and 11:59 PM and eliminate “PM.” For the afternoon, evening, and night hours, simply add 12 to the 12-hour time to convert it to 24-hour time.

1. 1:00 PM = 13:00.
2. 2:00 PM = 14:00.
3. 3:00 PM = 15:00.
4. 4:00 PM = 16:00.
5. 5:00 PM = 17:00.
6. 6:00 PM = 18:00.
7. 7:00 PM = 19:00.
8. 8:00 PM = 20:00.

## How do you write 12.30 in 24 hour clock?

Converting AM/PM to 24 Hour Clock

1. Examples: 12 Midnight = 00:00, 12:35 AM = 00:35. …
2. Examples: 11:20 AM = 11:20, 12:30 PM = 12:30. …
3. Examples: 4:45 PM = 16:45, 11:50 PM = 23:50. …
4. Examples: 00:10 = 12:10 AM, 00:40 = 12:40 AM. …
5. Examples: 01:15 = 1:15 AM, 11:25 = 11:25 AM. …
6. Examples: 12:10 = 12:10 PM, 12:55 = 12:55 PM.

## How does 24 hour time work?

A time in the 24-hour clock is written in the form hours:minutes (for example, 01:23), or hours:minutes:seconds (01:23:45). … Under the 24-hour clock system, the day begins at midnight, 00:00, and the last minute of the day begins at 23:59 and ends at 24:00, which is identical to 00:00 of the following day.

## How do you explain 24 hours in a day?

Our 24-hour day comes from the ancient Egyptians who divided day-time into 10 hours they measured with devices such as shadow clocks, and added a twilight hour at the beginning and another one at the end of the day-time, says Lomb. “Night-time was divided in 12 hours, based on the observations of stars.

## What is 12.01 am in 24-hour clock?

But one minute after midnight (12.01) is unquestionably am. Hence for consistent usage, 12am must mean midnight.

## How do you format 24 hour time?

To write time in the 24-hour system, always specify both the hour and the minute, and include the leading zero for single-digit hours. Use numerals instead of words. Four digits should always be shown. Our flight landed at 05:45 in Cancun.

## Does AM and PM use 24 hour clock?

No, the AM and PM designations are not used when using a 24-hour / military clock.