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24 Hour Clock We are learning how to read the 24 hour clock.

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Presentation on theme: "24 Hour Clock We are learning how to read the 24 hour clock."— Presentation transcript:

1 24 Hour Clock We are learning how to read the 24 hour clock

2 There are 24 hours in a day! The first 12 hours of the day are from: Midnight – Midday

3 In 12 hour time We count from midnight to midday Then we count from midday to midnight!

4 Count the hours in the day… 1,2,3,4,5,6,7,8,9,10,11,12

5 In 24 hour time we count from... 1 to 24! 1,2,3,4,5,6,7,8,9,10,11,12, 13,14,15,16,17,18,19,20,21,22,23,24!

6 We don’t use AM or PM in 24 hour clock! 1 am 2am 3am 4am 5am 6am 7am 8am 9am 10am 11am 12 noon 01:00 02:00 03:00 04:00 05:00 06:00 07:00 08:00 09:00 10:00 11:00 12:00

7 For PM times we keep counting to 24! 1pm 2pm 3pm 4pm 5pm 6pm 7pm 8pm 9pm 10pm 11pm 12 midnight 13:00 14:00 15:00 16:00 17:00 18:00 19:00 20:00 21:00 22:00 23:00 24:00 / 00:00

8 Look at Midnight! 12:00 midnight 00:00 Why???

9 It’s a new day Midnight is the very beginning of the new day. We have counted a full 24 hours The day is over – so we start counting again from zero! 1,2,3,4,5,6,7,8,9,10,11,12, 13,14,15,16,17,18,19,20,21,22,23,24!

10 What about the minutes? In 24 hour time the minutes don’t change. 1.15am 01:15 2:45am 02:45 6:24pm 18:24 8:30pm 20:30 10:45am 10:45 11:35pm 23:35

11 Noon & Midnight Noon 12:00pm12:00 12:15pm12:15 12:30pm12:30 12:45pm12:45 12:50pm12:50 12:05pm12:05 12:10pm12:10 Midnight 12:00am00:00 12:15am00:15 12:30am00:30 12:45am00:45 12:50am00:50 12:05am00:05 12:10am00:10

12 Click on the link to return to our website http://www.killeanps.com/projects.html


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