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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]
If present, a dagger (†) indicates the usage of a nautical time zone letter outside of the standard geographic definition of that time zone. Some zones that are north/south of each other in the mid-Pacific differ by 24 hours in time – they have the same time of day but dates that are one day apart. The two extreme time zones on Earth (both ...
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).
Given that Petit-Mécatina is no longer part of Minganie, and given that it is entirely east of 63°W, a careful interpretation of 2006 time act will place Petit-Mécatina on permanent Atlantic Standard Time (AST) from 2010 onwards. This may be considered moot because Petit-Mécatina is a vast wilderness with no infrastructure and no inhabitants.
During part of the year, some portions of the zone observe daylight saving time, referred to as Atlantic Daylight Time (ADT), by moving their clocks forward one hour to UTC−03:00. The clock time in this zone is based on the mean solar time of the 60th meridian west of the Greenwich Observatory .
Before 1 March 1922, the Canary Islands still used mean solar time until it was discovered that the royal decree of 1900 applied only to the Peninsula and Balearic Islands. [2] The Canary Islands then used a time 1 hour behind the rest of Spain; UTC−01:00, until 16 March 1940, and since then, they have used Western European Time (UTC±00:00).
The shift is the amount of time added at the DST start time and subtracted at the DST end time. For example, in Canada and the United States, when DST starts, the local time changes from 02:00 to 03:00, and when DST ends, the local time changes from 02:00 to 01:00. As the time change depends on the time zone, it does not occur simultaneously in ...
The vertical Canary Current. The Canary Current is a wind-driven surface current that is part of the North Atlantic Gyre.This eastern boundary current branches south from the North Atlantic Current and flows southwest about as far as Senegal where it turns west and later joins the Atlantic North Equatorial Current.