Year 5 · Time

24-hour time

Time units: 60 seconds in a minute, 60 minutes in an hour, 24 hours in a day, 7 days in a week. The 24-hour clock counts past 12.

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Convert with × or ÷ 60, 24 or 7.
24-hour time: afternoon hours add 12 (3 pm = 15:00). Mornings keep the hour with two digits.

15:30 in 12-hour time

15 is after 12: 15 − 12 = 3, and it is after noon, so pm

3:30 pm

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12 pm is 12:00, 12 am is 00:00.

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