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ISO 8601. International standard ISO 8601 ( Representation of dates and times) defines unambiguous written all-numeric big-endian formats for dates, such as 2022-12-31 for 31 December 2022, and time, such as 23:59:58 for 23 hours, 59 minutes, and 58 seconds. These standard notations have been adopted by many countries as a national standard, e ...
The official national standard time is called Beijing Time ( BJT, simplified Chinese: 北京时间; traditional Chinese: 北京時間; pinyin: Běijīng shíjiān) domestically because it is based on the 120th meridian east, where Beijing City is located, [ 1][ 2] and China Standard Time ( CST) internationally. [ 3]
The Afghanistan-China border marks the greatest terrestrial time zone difference on Earth, with a 3.5 hour difference between Afghanistan's UTC+4:30 and China's UTC+08:00. A visualization of the mismatch between clock time and solar time in different locations.
Such designations can be ambiguous; for example, "CST" can mean China Standard Time (UTC+8), Cuba Standard Time (UTC−5), and (North American) Central Standard Time (UTC−6), 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 an earlier ...
The ASEAN Common Time ( ACT) is a proposal to adopt a standard time for all Association of Southeast Asian Nations member states. [ 1][ 2] It was proposed in 1995 by Singapore, and in 2004 and 2015 by Malaysia to make business across countries easier. [ 3][ 4] The proposal failed because of opposition in Thailand and Cambodia: [ 3][ 5] Thais ...
30 km 2 (12 sq mi) • Land. 31 km 2 (12 sq mi) Population. • Total. ~30,000. Time zone. China standard time. Tianducheng ( Chinese: 天都城; pinyin: Tiāndūchéng ), officially Guangsha Tianducheng ( Chinese: 广厦天都城; pinyin: Guǎngshà Tiāndūchéng ), is a housing estate in Xingqiao Subdistrict, Linping District, Hangzhou ...
[6] [7] At the time, local mean time was used to set clocks, meaning that every place used its own local time based on its longitude because the time was measured by locally observing the Sun. Philippine Standard Time was instituted through Batas Pambansa Blg. 8 (that defined the metric system ), approved on December 2, 1978, and implemented on ...
Daylight saving time by country. Daylight saving time (DST), also known as summer time, is the practice of advancing clocks during part of the year, typically by one hour around spring and summer, so that daylight ends at a later time of the day. As of 2024, DST is observed in most of Europe, most of North America and parts of Africa and Asia ...