In Hong Kong, Hong Kong Time is defined in the Interpretation and General Clauses Ordinance (Cap 1), Laws of Hong Kong.
Section 67(2) of the Ordinance states that:
"Hong Kong Time" (香港時間) means the time used for general purposes throughout Hong Kong namely, 8 hours, or such other period as may be determined by the Legislative Council by resolution under this subsection or under section 16 of the Oil (Conservation and Control) Ordinance (Cap 264), in advance of Universal Standard Time.[3]
Currently, Hong Kong time is defined as UTC+08:00. The reference in section 67(2) to the Oil (Conservation and Control) Ordinance is actually a power given to the Legislative Council of Hong Kong to change Hong Kong Time for the purposes of conserving oil, i.e. to implement daylight saving time. However, no daylight saving time has been observed since 1979.
The Hong Kong Time was first set to Local Mean Time (GMT+07:36:42) on 1 January 1885 at 13:00 by the then Royal Observatory Hong Kong. In 1904, the Greenwich Mean Time was adopted as the basis for Hong Kong Time, the time was set at 8 hours in advance of Greenwich Mean Time.[2] The current Coordinated Universal Time system was adopted as an official time standard on 1 January 1972. However, the legal Hong Kong Time still remained based on Greenwich Mean Time until it was changed to Universal Standard Time in 1998[4] after the Hong Kong handover.
From 1885, Hong Kong Time was determined by astronomical observations at the Hong Kong Observatory using a 6-inch equatorial mount and a 3-inch Transit Circle.[2] The time was announced to the general public, particularly mariners, by dropping a 6-feet diameter time ball from a mast exactly at 13:00 daily in front the Marine Police Headquarters Compound, where it is visible from the Victoria Harbour. In January 1908, the time ball was relocated to the hill of Blackhead Point where it had even higher visibility. With the rise of radio broadcast and the launching of Radio Hong Kong in 1922, the importance of the time ball decreased. It was decommissioned on 30 June 1933.[2]
During the Second World War, the equatorial mount and transit circle were lost. After the war, a pendulum clock was installed and regulated by radio time signals from other timekeeping centres. Timing accuracy gradually improved from the daily engineering tolerance of a few seconds to one-fifth of a second.
In 1966, the pendulum clock in the Royal Observatory Hong Kong was replaced by a crystal oscillator timing system. In the same year, the Royal Observatory started to broadcast the time directly with a 6-pip time signal on 95 MHz. This continued until 16 September 1989.
^Nautical Almanac Office (U S ) (17 May 2013). The Nautical Almanac for the Year 2014. Government Printing Office. p. 262. ISBN978-0-16-091756-1. from the original on 10 January 2018.
^ abcdefHong Kong Observatory, History of Hong Kong Time Service, from the original on 2010-11-27, retrieved 2010-10-19
^section 67 of the Interpretation and General Clauses Ordinance 2011-01-08 at the Wayback Machine, Laws of Hong Kong.
^section 25 of the Adaptation of Laws (Interpretative Provisions) Ordinance (26 of 1998) 2007-09-30 at the Wayback Machine, Laws of Hong Kong.
^Pearce, Chris (6 April 2017). . ISBN9781925516968. Archived from the original on 2017-04-24.
Hong Kong Time by Hong Kong Observatory 2008-06-24 at the Wayback Machine
Hong Kong Summer Time in history
History of Hong Kong Time service 2009-05-22 at the Wayback Machine
IANA time zone database
PHP time zones Asia
April 15, 2023
hong, kong, time, abbreviation, chinese, 香港時間, jyutping, hoeng1, gong2, gaan3, time, hong, kong, observed, year, round, hong, kong, observatory, official, timekeeper, indicated, asia, hong, kong, iana, time, zone, database, time, zoneutc, offsetbtutc, 00curren. Hong Kong Time abbreviation HKT Chinese 香港時間 Jyutping hoeng1 gong2 si4 gaan3 is the time in Hong Kong observed at UTC 08 00 all year round 1 The Hong Kong Observatory is the official timekeeper of the Hong Kong Time 2 It is indicated as Asia Hong Kong in the IANA time zone database Hong Kong TimeTime zoneUTC offsetBTUTC 08 00Current time18 14 14 April 2023 BT refresh Observance of DSTDST is not observed in this time zone Hong Kong TimeBlackhead Point Signal Tower where a time ball was used in the 19th century and early 20th century to announce time Traditional Chinese香港時間Simplified Chinese香港时间TranscriptionsStandard MandarinHanyu PinyinXianggǎng ShijianIPA ɕja ŋka ŋ ʂɻ tɕjɛ n Yue CantoneseJyutpingHoeng1gong2 si4gaan1 Contents 1 Time standards 2 Timekeeping 3 Daylight Saving 4 Time zone serial 5 See also 6 References 7 External linksTime standards EditIn Hong Kong Hong Kong Time is defined in the Interpretation and General Clauses Ordinance Cap 1 Laws of Hong Kong Section 67 2 of the Ordinance states that Hong Kong Time 香港時間 means the time used for general purposes throughout Hong Kong namely 8 hours or such other period as may be determined by the Legislative Council by resolution under this subsection or under section 16 of the Oil Conservation and Control Ordinance Cap 264 in advance of Universal Standard Time 3 Currently Hong Kong time is defined as UTC 08 00 The reference in section 67 2 to the Oil Conservation and Control Ordinance is actually a power given to the Legislative Council of Hong Kong to change Hong Kong Time for the purposes of conserving oil i e to implement daylight saving time However no daylight saving time has been observed since 1979 The Hong Kong Time was first set to Local Mean Time GMT 07 36 42 on 1 January 1885 at 13 00 by the then Royal Observatory Hong Kong In 1904 the Greenwich Mean Time was adopted as the basis for Hong Kong Time the time was set at 8 hours in advance of Greenwich Mean Time 2 The current Coordinated Universal Time system was adopted as an official time standard on 1 January 1972 However the legal Hong Kong Time still remained based on Greenwich Mean Time until it was changed to Universal Standard Time in 1998 4 after the Hong Kong handover Timekeeping Edit The time ball in front of Marine Police Headquarters Compound Tsim Sha Tsui Kowloon circa 1908 The time ball tower at Blackhead Point in 1908 From 1885 Hong Kong Time was determined by astronomical observations at the Hong Kong Observatory using a 6 inch equatorial mount and a 3 inch Transit Circle 2 The time was announced to the general public particularly mariners by dropping a 6 feet diameter time ball from a mast exactly at 13 00 daily in front the Marine Police Headquarters Compound where it is visible from the Victoria Harbour In January 1908 the time ball was relocated to the hill of Blackhead Point where it had even higher visibility With the rise of radio broadcast and the launching of Radio Hong Kong in 1922 the importance of the time ball decreased It was decommissioned on 30 June 1933 2 During the Second World War the equatorial mount and transit circle were lost After the war a pendulum clock was installed and regulated by radio time signals from other timekeeping centres Timing accuracy gradually improved from the daily engineering tolerance of a few seconds to one fifth of a second In 1966 the pendulum clock in the Royal Observatory Hong Kong was replaced by a crystal oscillator timing system In the same year the Royal Observatory started to broadcast the time directly with a 6 pip time signal on 95 MHz This continued until 16 September 1989 In 1980 the Royal Observatory adopted a timing system based on a Caesium beam atomic clock This system narrowed the engineering tolerance down to less than 1 millisecond 2 The frequency standard of the clock is based on the primary standard used by Japan s Communications Research Laboratory In 1994 the atomic clock was replaced with a newer model 2 Current Hong Kong Time can be obtained from the Observatory s Network Time Server Archived 2014 03 14 at the Wayback Machine Daylight Saving EditHong Kong adopted daylight saving measures in 1941 However the practice eventually declined in popularity and was eliminated after 1979 5 Time zone serial EditAsia Hong Kong 6 See also EditUTC 08 00 ASEAN Common Time tz databaseReferences Edit Nautical Almanac Office U S 17 May 2013 The Nautical Almanac for the Year 2014 Government Printing Office p 262 ISBN 978 0 16 091756 1 Archived from the original on 10 January 2018 a b c d e f Hong Kong Observatory History of Hong Kong Time Service archived from the original on 2010 11 27 retrieved 2010 10 19 section 67 of the Interpretation and General Clauses Ordinance Archived 2011 01 08 at the Wayback Machine Laws of Hong Kong section 25 of the Adaptation of Laws Interpretative Provisions Ordinance 26 of 1998 Archived 2007 09 30 at the Wayback Machine Laws of Hong Kong Pearce Chris 6 April 2017 The Great Daylight Saving Time Controversy ISBN 9781925516968 Archived from the original on 2017 04 24 Time Zone Database External links EditHong Kong Observatory Hong Kong Time by Hong Kong Observatory Archived 2008 06 24 at the Wayback Machine Hong Kong Summer Time in history History of Hong Kong Time service Archived 2009 05 22 at the Wayback Machine IANA time zone database PHP time zones Asia Retrieved from https en wikipedia org w index php title Hong Kong Time amp oldid 1117588936, wikipedia, wiki, book, books, library,
