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Time (Easy)

This 11 Plus Maths quiz helps pupils understand time differences around the world and how Earth’s rotation creates local times in different countries.

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Fascinating Fact:

When it’s 3 p.m. in London, it’s 10 a.m. in New York, a five-hour difference caused by Earth’s rotation.

In 11 Plus Maths, pupils explore how time works globally. Understanding time zones, hours, and minutes improves reasoning and helps solve real-world travel and scheduling problems.

Key Terms

Time Zone: One of the 24 regions of the Earth, each using a standard time based on its position relative to the Prime Meridian.
Prime Meridian: The zero-degree line of longitude from which all other time zones are measured.
Rotation: The spinning of Earth on its axis, taking about 24 hours to complete and creating day and night.

Discover more about 11 Plus sample questions in our guide for parents.

Frequently Asked Questions (Click to see answers)

Why is there a time difference between London and New York?

The Earth rotates from west to east, so countries further west experience earlier times. New York is five hours behind London because it’s positioned further west.

How many time zones are there in the world?

There are 24 main time zones, each roughly one hour apart. Some regions adjust their clocks for daylight saving, slightly changing the number in use.

What causes day and night to happen at different times?

Day and night occur because Earth spins on its axis. As one side faces the Sun it experiences daylight, while the other side is in darkness.

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Here is a 24-hour conversion table to help you.

00:00 = 12:00 midnight (start of day)
01:00 = 1:00 a.m.
02:00 = 2:00 a.m.
03:00 = 3:00 a.m.
04:00 = 4:00 a.m.
05:00 = 5:00 a.m.
06:00 = 6:00 a.m.
07:00 = 7:00 a.m.
08:00 = 8:00 a.m.
09:00 = 9:00 a.m.
10:00 = 10:00 a.m.
11:00 = 11:00 a.m.
12:00 = 12:00 (noon)
13:00 = 1:00 p.m.
14:00 = 2:00 p.m.
15:00 = 3:00 p.m.
16:00 = 4:00 p.m.
17:00 = 5:00 p.m.
18:00 = 6:00 p.m.
19:00 = 7:00 p.m.
20:00 = 8:00 p.m.
21:00 = 9:00 p.m.
22:00 = 10:00 p.m.
23:00 = 11:00 p.m.
00:00 = 12:00 midnight (end of day)

1 .

Using the 24-hour conversion table, how would the time appear on the 24 hour clock?
6:30 am

18:30

06:30

6:30

8:30

This is read as 'zero six thirty hours'. TIP: Between midnight and noon, you don't have to do any conversion, e.g. 5:40 am = 05:40

2 .

Using the 24-hour conversion table, how would the time appear on the 24 hour clock?
7:00 pm

19:00

07:00

7:00

This is read as 'nineteen hundred hours'. TIP: After 12 noon until midnight, you add 12 to the hour, e.g. 5:40 pm = 17:40

3 .

Using the 24-hour conversion table, how would the time appear on the 24 hour clock?
6:35 am

16:35

6:35

18:35

06:35

This is read as 'zero six thirty-five hours'

4 .

Using the 24-hour conversion table, how would the time appear on the 24 hour clock?
9:00 pm

9:00

09:00

21:00

This is read as 'twenty-one hundred hours'

5 .

Using the 24-hour conversion table, how would the time appear on the 24 hour clock?
11:30 am

11:30

23:30

011:30

22:30

This is read as 'eleven thirty hours'

6 .

Using the 24-hour conversion table, how would the time appear on the 24 hour clock?
5:15 pm

17:15

05:15

5:15

07:15

This is read as 'seventeen fifteen hours'

7 .

Using the 24-hour conversion table, how would the time appear on the 24 hour clock?
4 pm

04:00

16:00

This is read as 'sixteen hundred hours'

8 .

Using the 24-hour conversion table, how would the time appear on the 24 hour clock?
10:45 pm

22:45

10:45

010:45

23:45

This is read as 'twenty-two forty-five hours'

9 .

Using the 24-hour conversion table, how would the time appear on the 24 hour clock?
3:15 am

15:15

03:15

3:15

003:15

This is read as 'zero three hundred fifteen hours'

10 .

Using the 24-hour conversion table, how would the time appear on the 24 hour clock?
12:00 midnight

0:00

0:0

00:00

This is read as 'zero zero hundred hours'. Note: The day begins at midnight, and the last minute of the day begins at 23:59 and ends at 24:00 BUT this is shown as 00:00. Some people do use 24:00, for example: 'Open from 00:00 to 24:00' - this shows that the business is open for the whole 24 hour period. To use 'Open from 00:00 to 00:00' might be a bit confusing. In general, avoid using 24:00 when telling the time

Author: Frank Evans (Specialist 11 Plus Teacher and Tutor)