Greenwich Mean Time

Etc/Greenwich

Saturday · May 9, 2026

UTC +0

Greenwich Mean Time (GMT) is the mean solar time at the Royal Observatory in Greenwich, London. The Greenwich meridian (0° longitude) passes through this location and divides the Earth into eastern and western hemispheres. GMT was the world's primary time reference before being superseded by UTC.

Time difference between Greenwich Mean Time GMT and world zones

Cities at UTC+0

Time Zones