View source for UTC+08:30

{{Short description|Former time zone}}
{{Infobox time zone | UTC = yes}}
'''UTC+08:30''' is an identifier for a [[UTC offset|time offset from UTC]] of +08:30.

==History==
This time zone became the [[Local Mean Time]] in [[Davao Oriental]] and in easternmost areas of the Philippines from Wednesday, January 1, 1845, until May 10, 1899 (Gregorian calendar), mandated by the virtue of Claveria's decree to reform the country calendar by skipping Tuesday, December 31, 1844, that redrew the [[International Date Line]] from being west of the country to go east and made the Philippines have same dates with the rest of Asia. Therefore, the whole archipelago was transferred from being the calendar date of the western hemisphere to the eastern hemisphere. It was an entire day behind its neighboring Asian territories for 323 years, 9 months, and 4 days since Magellan's arrival in Limasawa on Saturday, March 16, 1521 (Julian Calendar), which caused by the tricky and unmentioned international date line during the 16th century.<ref>{{cite web|url=https://thephilippinestoday.com/claverias-reform/|title=Claveria's Reform|publisher=The Philippines Today|author=Berto|date=July 28, 2022|access-date=March 18, 2023}}</ref>

UTC+08:30 was Standard Time of South Korea from 1954 to 1961<ref>{{cite web|url=https://github.com/eggert/tz/commit/929c14a3d8ce505a9b8fb7099bee3a03ccf7e8e4|title=Correct many pre-1989 entries for Korea. · eggert/tz@929c14a|website=[[GitHub]] |access-date=7 August 2015}}</ref> and it was the time zone of North Korea from 2015<ref name="BNO2015">{{cite news |url=http://bnonews.com/news/index.php/news/1181 |title=North Korea to introduce new timezone this month |date=7 August 2015 |work=[[BNO News]] |access-date=9 May 2021 |archive-url=https://web.archive.org/web/20150925093530/http://bnonews.com/news/index.php/news/1181 |archive-date=25 September 2015 |url-status=dead }}</ref> to 2018.<ref>{{Cite news|url=https://www.bbc.com/news/world-asia-44010705|title=North Korea changes its time zone|date=5 May 2018|work=BBC News|access-date=9 May 2021|language=en-GB}}</ref> This time was also used for [[Changpai Time Zone]] in northeast China between 1918 and 1949.{{cn|date=November 2021}}

==See also==
*[[Time in China]]
*[[Time in North Korea]]
*[[Time in South Korea]]

==References==
{{reflist}}
 
{{UTC time offsets}}

{{DEFAULTSORT:Utc plus 08:30}}
[[Category:UTC offsets]]
[[Category:Time in North Korea]]