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Questions and Answers
What is the estimated error of a UTC clock?
Where is UTC primarily used?
What problem did Sir Sandford Fleming's idea of time zones solve?
How many time zones are there in reality?
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Why are time zones important?
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Coordinated Universal Time (UTC) is a standard which all our major ______ devices are set to.
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The Prime Meridian UTC is used in parts of ______, Iceland, the UK, Ireland, 14 African countries and Antarctica.
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At 12:00 noon in these countries, the sun is directly ______.
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The scientist Sir Sandford Fleming came up with the idea of ______ in 1878.
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Move 15 degrees west and you will be in the time zone ______.
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Study Notes
Coordinated Universal Time (UTC)
- UTC is a standard for timekeeping, with an estimated error of one second in 100 million years.
UTC Usage
- UTC is used in parts of Greenland, Iceland, the UK, Ireland, 14 African countries, and Antarctica.
- These countries lie on the Greenwich Meridian, also known as the Prime Meridian, an imaginary line that runs north to south across the globe.
Time Zones
- The concept of time zones was introduced by Sir Sandford Fleming in 1878 to standardize time while considering local conditions.
- Each 15-degree section of the globe becomes a time zone, with UTC being one zone.
- Moving 15 degrees east or west results in a new time zone (e.g., UTC+1 or UTC-1).
- In reality, there are more than 24 time zones, with some islands and parts of countries having zones in increments of 30 or 45 minutes.
Importance of Time Zones
- Time zones facilitate global connectivity and trade, making international transactions and travel more efficient.
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Description
Learn about Coordinated Universal Time, its accuracy and the countries that use it.
