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No, they are different. The name "international time" can be used for UTC. In everyday life we use it. It is the timezone of the zero meridian.

The "international atomic time" however is a scientific time-scale derived from atomic clocks.

There is a growing gap between the two time. The UTC contains "jumps", these are the so called leap-seconds.

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Related Questions

Where can one learn about atomic time?

Wikipedia contains an article on "International Atomic Time," which provides a general discussion on the topic. For more information, see the NPL page "What is Time?"


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Atomic watches receive radio signals from various companies that indicate what the current time is. These signals are released from the International Bureau of Weights and Measures in Paris, ensuring that atomic watches are constantly synchronized with Coordinated Universal Time (UTC).


What is the same in isotopes?

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