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Date: 2013-10-15 05:12:47Greenwich Mean Time International Atomic Time Leap second Second Tropical year Ephemeris time Day Solar time International Earth Rotation and Reference Systems Service Measurement Time scales Universal Time | The proposed redefinition of Coordinated Universal TimeAdd to Reading ListSource URL: www.bipm.orgDownload Document from Source WebsiteFile Size: 153,25 KBShare Document on Facebook |