Time zones cover about 15 degrees of longitude. They’re measured in reference to the Meridian of Greenwich, England (0˚ longitude). Time at Greenwich is coordinated universal time (UTC) formerly Greenwich mean time (GMT).
by @NatGeoMaps
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Time zones cover about 15 degrees of longitude. They’re measured in reference to the Meridian of Greenwich, England (0˚ longitude). Time at Greenwich is coordinated universal time (UTC) formerly Greenwich mean time (GMT).
by @NatGeoMaps