Question

Write the following time according to 12 hour clock convention.
1. 02:30 ____
2. 12:10 ____
3. 20:15 ____
4. 06:00 ____
5. 12:00 ____
6. 23:55 ____
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Answer 1

Answer:

1. 02:30= 2:30 am

2. 12:10= 12:10 pm

3. 20:15= 8:15 pm

4. 6:00= 6:00 am

5. 12:00= 12:00 pm

6. 23:55= 11:55 pm

Answer 2

According to the 12-hour clock convention, the time is written as:

1. 2:30 a.m

2. 12:10 p.m

3. 08:15 p.m

4. 06:00 a.m

5. 12:00 p.m

6. 11:55 p.m

What is the difference between the 24-hour and the 12-hour clock convention?

• In the 24-hour clock convention, the hours of the day are not divided into a.m or p.m. Instead, hours after 12:00 p.m are counted as 1300hrs, 1400hrs, and so on.
• In the 12-hour clock convention, a.m(Ante Meridiem) denotes time before noon, and p.m (Post Meridiem) denotes time post noon.

How to convert time from the 24-hour clock convention to the 12-hour one?

• So if we want to convert time from the 24-hour clock convention to the 12-hour clock convention, we will :

1. Subtract 12 if the number > 12 or
2. Add a.m if the number is < 12.

• For example, in question part 3, 20:15 hrs is converted to 8:15 p.m by subtracting 12 from 20.

Thus, we have converted all the given question parts from the 24-hour clock convention to the 12-hour one.

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