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Pale colours: Standard time observed all year Dark colours: Summer time observed Europe spans seven primary time zones (from UTC−01:00 to UTC+05:00), excluding summer time offsets (five of them can be seen on the map, with one further-western zone containing the Azores, and one further-eastern zone spanning the Ural regions of Russia and European part of Kazakhstan).
This is a list representing time zones by country. Countries are ranked by total number of time zones on their territory. Time zones of a country include that of dependent territories (except Antarctic claims). France, including its overseas territories, has the most time zones with 12 (13 including its claim in Antarctica and all other counties).
The tz database partitions the world into regions where local clocks all show the same time. This map was made by combining version 2023d with OpenStreetMap data, using open source software. [1] This is a list of time zones from release 2025a of the tz database. [2]
Western European Time / Greenwich Mean Time : Western European Summer Time / British Summer Time / Irish Standard Time : Red: Central European Time : Central European Summer Time : Yellow: Eastern European Time / Kaliningrad Time : Ochre: Eastern European Time : Eastern European Summer Time : Green: Moscow Time / Turkey Time
Eastern European Time (UTC+2) Eastern European Summer Time (UTC+3) Light green: Further-eastern European Time / Moscow Time / Turkey Time (UTC+3) Light cyan: Georgia Time / Armenia Time / Azerbaijan Time / Samara Time Light colours indicate where standard time is used all year; dark colours indicate where a summer time (also known as "daylight ...
Such designations can be ambiguous; for example, "CST" can mean China Standard Time (UTC+08:00), Cuba Standard Time (UTC−05:00), and (North American) Central Standard Time (UTC−06:00), and it is also a widely used variant of ACST (Australian Central Standard Time, UTC+9:30). Such designations predate both ISO 8601 and the internet era; in ...
Observed DST (commonly referred to as British Summer Time (BST)) since 1916. Year-round Summer Time (BST) + Double Summer Time (BDST) 1940–1945. Two-stage Double Summer Time (BDST) 1947. Year-round Summer Time (BST) 1968–1971. Follows European Union practice, although no longer a member. United States
Starting in 1916, the dates for the beginning and end of BST each year were mandated by the Parliament of the United Kingdom. From 1940 to 1945, the country used British Summer Time in the winter months and British Double Summer Time, a further hour ahead of GMT, in the summer months. From 1968 to 1971, the country used BST throughout the year.