|Time in South Korea|
|01:49, 23 September 2023 KST|
|Observance of DST|
|DST is not observed in this time zone.|
|Korea Standard Time|
|Revised Romanization||Hanguk pyojunsi|
South Korea has one time zone,Korea Standard Time (UTC+09:00),which is abbreviated KST.South Korea currently does not observe daylight saving time.
From May 8 to October 9 in 1988,daylight saving time was tested to better accommodate the calendar of competitions held during the 1988 Summer Olympics in Seoul.
In 1434,inventor Jang Yeong-sil developed Korea's first automatic water clock,which King Sejong adapted as Korea's standard timekeeper. It is likely that Koreans used water clocks to keep time prior to this invention,but no concrete records of them exist.In 1437,Jang Yeong-sil,with Jeong Cho,created a bowl-shaped sundial called the angbu ilgu (Hangul:앙부일구),which King Sejong had placed in public so anyone could use it.
Geographically,the western parts of Korea,including the South Korean capital city,Seoul,are UTC+08:00. In 1908,the Korean Empire adopted a standard time,UTC+08:30. In 1912,during the Japanese occupation of Korea,the Governor-General of Korea changed standard time to UTC+09:00 to align with Japan Standard Time. However,in 1954,the South Korean government under President Syngman Rhee reverted the standard time to UTC+08:30. Then in 1961,under the military government of President Park Chung-hee,the standard time was changed back to UTC+09:00 once again.
In order to accommodate American television viewers,South Korea observed daylight saving time (UTC+10:00) when Seoul hosted the 1988 Summer Olympics. The one-hour time change meant that many daytime events could be broadcast live from South Korea when it was prime time on the U.S. east coast.
North Korea also uses Korea Standard Time. From August 2015 to May 2018,North Korea changed its time zone to UTC+08:30,a time zone known as Pyongyang Standard Time,but the change was reverted to promote Korean unity.
The IANA time zone database contains one zone for South Korea in the file zone.tab,named Asia/Seoul.
A time zone is an area which observes a uniform standard time for legal,commercial and social purposes. Time zones tend to follow the boundaries between countries and their subdivisions instead of strictly following longitude,because it is convenient for areas in frequent communication to keep the same time.
Japan Standard Time,or Japan Central Standard Time,is the standard time zone in Japan,9 hours ahead of UTC (UTC+09:00). Japan does not observe daylight saving time,though its introduction has been debated on several occasions. During World War II,the time zone was often referred to as Tokyo Standard Time.
The Eastern Time Zone (ET) is a time zone encompassing part or all of 23 states in the eastern part of the United States,parts of eastern Canada,and the state of Quintana Roo in Mexico.
The Pacific Time Zone (PT) is a time zone encompassing parts of western Canada,the western United States,and western Mexico. Places in this zone observe standard time by subtracting eight hours from Coordinated Universal Time (UTC−08:00). During daylight saving time,a time offset of UTC−07:00 is used.
The Alaska Time Zoneobserves standard time by subtracting nine hours from Coordinated Universal Time (UTC−09:00). During daylight saving time its time offset is eight hours (UTC−08:00). The clock time in this zone is based on mean solar time at the 135th meridian west of the Greenwich Observatory.
Central European Time (CET) is a standard time of Central,and parts of Western Europe,which is one hour ahead of Coordinated Universal Time (UTC). The time offset from UTC can be written as UTC+01:00. It is used in most parts of Europe and in a few North African countries. CET is also known as Middle European Time and by colloquial names such as Amsterdam Time,Berlin Time,Brussels Time,Madrid Time,Paris Time,Rome Time,Prague time,Warsaw Time or Romance Standard Time (RST).
Time in New Zealand is divided by law into two standard time zones. The main islands use New Zealand Standard Time (NZST),12 hours in advance of Coordinated Universal Time (UTC) / military M (Mike),while the outlying Chatham Islands use Chatham Standard Time (CHAST),12 hours 45 minutes in advance of UTC / military M^ (Mike-Three).
The Atlantic Time Zone is a geographical region that keeps standard time—called Atlantic Standard Time (AST)—by subtracting four hours from Coordinated Universal Time (UTC),resulting in UTC−04:00. AST is observed in parts of North America and some Caribbean islands. 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 result in 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.
UTC+08:00 is an identifier for a time offset from UTC of +08:00.
UTC+03:00 is an identifier for a time offset from UTC of +03:00. In areas using this time offset,the time is three hours later than the Coordinated Universal Time (UTC). Following the ISO 8601 standard,a time with this offset would be written as,for example,2019-02-08T23:36:06+03:00.
Australia uses three main time zones:Australian Eastern Standard Time,Australian Central Standard Time and Australian Western Standard Time.
There are eleven time zones in Russia,which currently observe times ranging from UTC+02:00 to UTC+12:00. Daylight saving time (DST) has not been used in Russia since 26 October 2014. From 27 March 2011 to 26 October 2014,permanent DST was used.
Canada is divided into six time zones. Most areas of the country's provinces and territories operate on standard time from the first Sunday in November to the second Sunday in March and daylight saving time the rest of the year.
Jang Yeong-sil was a Korean mechanical engineer,scientist,and inventor during the Joseon Dynasty (1392–1897). Although Jang was born a peasant,King Sejong allowed Jang to work at the royal palace. Jang's inventions,such as the Cheugugi and the water gauge,highlight the technological advancements of the Joseon Dynasty.
The Borugak Jagyeongnu,classified as a scientific instrument,is the 229th National Treasure of South Korea and was designated by the South Korean government on March 3,1985. The water clock is currently held and managed by the National Palace Museum of Korea in Seoul. It dates to the time of King SeoJong of the Joseon Dynasty.
Time in North Korea,called Pyongyang Time or Standard Time of the Democratic People's Republic of Korea,is since May 2018 equal to Korea Standard Time:9 hours ahead of UTC (UTC+09:00). Like South Korea,North Korea does not currently observe daylight saving time. Time keeping in North Korea is under the State Commission for Science and Technology.
As of 2022,daylight saving time is used in the following Asian countries:
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 2023,DST is observed in most of Europe,most of North America and parts of Africa and Asia around the Northern Hemisphere summer,and in parts of South America and Oceania around the Southern Hemisphere summer. It was also formerly observed in other areas.
Jang Yeong-sil (Korean: 장영실) is a 2016 South Korean historical drama television series starring Song Il-gook,Kim Yeong-cheol,Kim Sang-kyung and Park Sun-young. It replaced The Jingbirok:A Memoir of Imjin War and aired on KBS1 from January 2,2016 to March 26,2016 on Saturdays and Sundays at 21:40 (KST) for 24 episodes.
Time in Sudan is given by a single time zone,officially denoted as Central Africa Time. Sudan has observed CAT since 1 November 2017. Sudan has not observed daylight saving time since 14 October 1985.