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An 1893 law set the de jure standard time of Denmark as the mean solar time 15°E of Greenwich, for all of Denmark, with an exception for the Faroe Islands, effective at 1 January 1894. [2] This linked the standard time in Denmark to Earth's rotation, and clocks in Denmark were at 12:00, when the sun is directly above the 15° Eastern meridian ...
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 2024b of the tz database. [2]
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 ...
Written time is almost always in the 24-hour clock. In spoken language, a mixture of the two systems are used: When giving exact times, or when speaking in official settings (radio, TV, etc.), the 24-hour clock is always used. When speaking informally, the 12-hour clock is often used. Minutes are usually rounded off to the nearest five minutes.
List of time zones by country – sorted by number of current time zones in the world; List of UTC offsets – current UTC offsets; List of time zone abbreviations – abbreviations; List of tz database time zones – zones used by many computer systems as defined by IANA; List of military time zones; Country-specific: List of time zones by U.S ...
UTC−08:00 – Pacific Time zone: the Pacific coast states, the Idaho Panhandle and most of Nevada and Oregon UTC−07:00 – Mountain Time zone: most of Idaho, part of Oregon, and the Mountain states plus western parts of some adjacent states UTC−06:00 – Central Time zone: a large area spanning from the Gulf Coast to the Great Lakes
Each zone line for a zone specifies, for a range of date and time, the offset to UTC for standard time, the name of the set of rules that govern daylight saving time (or a hyphen if standard time always applies), the format for time zone abbreviations, and, for all but the last zone line, the date and time at which the range of date and 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 colours indicate where standard time is used all year; dark colours indicate where a summer time (also known as "daylight saving time" or "DST") is used.