Relates to 24 hour Clock with respect 12 hour Clock

Relates to 24 hour Clock with respect 12 hour Clock:

24 hour Clock is the most commonly used time notation in the world.

Did you see the display of time in Railways?

The hour start at zero and go through 23.

Convert 24 hour Clock to 12 Hour Clock.

EXAMPLE

Example: Look at the time on this digital Clock.

The clock says 20 hours and 27 minutes

Subtract 12 from 20 hours

There is no change in minutes

→ The time in 12 – hour Clock is 8:27 p.m.

To change time to 12 hr Clock, just subtract 12 from the hour.

E To convert 12 – hr Clock to 24 – hr Clock:

Think it..

1:00 p.m. becomes 13.00 in 24 – hr Clock.

01.00 1:00 a.m

12:00 12:00 p.m

13:00 1:00 p.m

To change time to 24 – hour Clock, just add 12 to the hour.

Activity

Try the slider.

1. Convert the following clock time into 24 hour time. Two examples are done for you.

12 hr → 24 hr

4:25 a.m → 04:25

9:20 a.m → 09:20

6:30 p.m → 18:30

2. Convert the following clock time into 12 hour time. Two examples are done for you.

24 hr → 12 hr

11:00 → 11:00 a.m

8:00 → 8 a.m.

12:28 → 12.28 p.m.

16:20 → 4.20 p.m.