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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.
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]
Further reading. List of tz database time zones. 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 2024a of the tz database. [ 2 ]
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 ...
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.
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 ...
China is the second most populous country in Asia as well as the second most populous country in the world, with a population exceeding 1.4 billion.. China has an enormous population with a relatively small youth component, partially a result of China's one-child policy that was implemented from 1979 until 2015.
[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 ...