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UTC+00:00 is an identifier for a time offset from UTC of +00:00. This time zone is the basis of Coordinated Universal Time (UTC) and all other time zones are based on it. In ISO 8601, an example of the associated time would be written as 2033-06-27T01:05:00+00:00. It is also known by the following geographical or historical names: Greenwich Mean Time Western European Time Azores Summer Time Easter