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Definition of UT1
1. Noun. The local time at the 0 meridian passing through Greenwich, England; it is the same everywhere. 
Exact synonyms: Gmt, Greenwich Mean Time, Greenwich Time, Universal Time, Ut
Generic synonyms: Time
Specialized synonyms: Coordinated Universal Time, Utc
Generic synonyms: Time
Specialized synonyms: Coordinated Universal Time, Utc



