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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]
When abbreviating "Australian Central Time" and "Australian Eastern Time", in domestic contexts the leading "Australian" may be omitted; however, the prefix "A" is often used to avoid ambiguity with the time zone abbreviations "CST" and "EST" referring to the Central and Eastern Time Zones in North America. [citation needed]
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 ...
The military time zone system ensures clear communication in a concise manner, and avoids confusion when coordinating across time zones. The CCEB , representing the armed forces of Australia, Canada, New Zealand, the United Kingdom, and the United States, publishes the military time zone system as the ACP 121 standard. [ 1 ]
Canada (Pacific Time Zone) [10] British Columbia. Except Northern Rockies Regional Municipality, Peace River Regional District, and the south-eastern communities of Cranbrook, Golden and Invermere [11] France [12] Clipperton Island; Mexico. Baja California [13] United Kingdom. Pitcairn Islands; United States (Pacific Time Zone) [14] California ...
UTC−08:00 (Zone 4 or Northwest Zone) – State of Baja California UTC−07:00 (Zone 3 or Pacific Zone) – States of Baja California Sur, Chihuahua, Nayarit, Sinaloa and Sonora UTC−06:00 (Zone 2 or Central Zone) – Most of Mexico UTC−05:00 (Zone 1 or Southeast Zone) – State of Quintana Roo: Time in Mexico: Chile: 3: UTC−06:00 ...
In 2000, all eastern jurisdictions that normally observe daylight-saving time – New South Wales, Victoria, the Australian Capital Territory and Tasmania – started daylight-saving time early, due to the 2000 Summer Olympics in Sydney. These jurisdictions changed on 27 August 2000.
In communications messages, a date-time group (DTG) is a set of characters, usually in a prescribed format, used to express the year, the month, the day of the month, the hour of the day, the minute of the hour, and the time zone, if different from Coordinated Universal Time (UTC).