It's 12 at noon in Greenwich. What time is it in New York? GMT -5
It's seven o'clock in the morning. / It's 7:00 am
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25
When did the system of time zones start?
In 1884, countries agreed to an international time system with 24 zones.
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lifesaver
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seesaw
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rocket
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baam
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25
How long it takes Earth to take one turn?
It takes 24 hours to complete one turn.
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25
Where is the Prime Meridian?
Prime Meridian is at Greenwich in London.
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25
How many time zones are there in the USA?
Five time zones excluding Hawaii.
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heart
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rocket
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fairy
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25
baam
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baam
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star
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shark
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banana
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25
When did the system of time zones start?
In 1884, countries agreed to an international time system with 24 zones.
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25
Why is the time different around the world?
The Earth rotates on it's axis. It takes 24 hours to turn. This means that the time isn't the same in different parts of the world.
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25
It's 12 noon in Greenwich. What time is it in Japan? GMT +9
It's nine o'clock in the evening / 9 pm / 21:00
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25
Why didn't we have the time zones before?
It didn't matter because people didn't travel very much and they travelled very slowly.
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25
When you cross the international date line then what happens?
When you cross it the day changes to yesterday.
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25
It's 12 pm in Greenwich. What's the time in Thailand? GMT +7
It's 7 pm / It's 19:00 / It's seven o'clock in the evening.
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25
How can you travel from today into yesterday?
On the other side of the world is the International Date Line. When you cross this line, you don't just change hours, you change days. So you can travel back.
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25
When was it that the same country often had different time zones?
It was until the 19th Century, towns in the same country often had different times.