Time in Australia - wikipedia Time in Australia This is the current revision of this page, as edited by Jessicapierce ( talk contribs ) at 22 : 13, 17 June 2017 ( minor copy edits ). The present address ( URL ) is a permanent link to this version. Revision as of 22 : 13, 17 June 2017 by Jessicapierce ( talk contribs ) ( minor copy edits ) ( diff ) ← Previous revision Latest revision ( diff ) Newer revision → ( diff ) `` Western Standard Time '' redirects here. For the musical album, see Asleep at the Wheel. For more details on daylight savings time, see Daylight saving time in Australia. Time in Australia Standard DST Zone State ( s ) UTC + 08 : 00 ( year round ) Western WA UTC + 09 : 30 ( year round ) Central NT UTC + 09 : 30 UTC + 10 : 30 Central SA UTC + 10 : 00 ( year round ) Eastern QLD UTC + 10 : 00 UTC + 11 : 00 Eastern NSW, TAS, VIC, ACT Australia uses three main time zones : Australian Western Standard Time ( AWST ; UTC + 08 : 00 ), Australian Central Standard Time ( ACST ; UTC + 09 : 30 ), and Australian Eastern Standard Time ( AEST ; UTC + 10 : 00 ). Time is regulated by the individual state governments, some of which observe daylight saving time ( DST ). Australia 's external territories observe different time zones. Standard time was introduced in the 1890s when all of the Dominions adopted it. Before the switch to standard time zones, each local city or town was free to determine its local time, called local mean time. Now, Western Australia uses Western Standard Time ; South Australia and the Northern Territory use Central Standard Time ; while New South Wales, Queensland, Tasmania, Victoria, and the Australian Capital Territory ( ACT ) use Eastern Standard Time. Daylight saving time is used in South Australia, New South Wales, Victoria, Tasmania, and the ACT. It is not currently used in Western Australia, Queensland or the Northern Territory. Contents 1 History 2 Civil time and legislation 2.1 Daylight saving time ( DST ) 2.2 Anomalies 2.3 External territories 2.4 Special events 2.5 National times 3 IANA time zone database 4 Debate, trials and referendums 4.1 Queensland 4.2 Western Australia 5 See also 6 Notes 7 References 8 External links History This article needs additional citations for verification. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed. ( August 2012 ) The standardization of time in Australia began in 1892, when surveyors from the six Dominions in Australia met in Melbourne for the Intercolonial Conference of Surveyors. The delegates accepted the recommendation of the 1884 International Meridian Conference to adopt Greenwich Mean Time ( GMT ) as the basis for standard time. The Dominions enacted time zone legislation, which took effect in February 1895. The clocks were set ahead of GMT by eight hours in Western Australia ; by nine hours in South Australia ( and the Northern Territory, which it governed ) ; and by 10 hours in Queensland, New South Wales, the Dominion of Victoria and Tasmania. The three time zones became known as Eastern Standard Time, Central Standard Time, and Western Standard Time. Broken Hill in the far west of New South Wales also adopted Central Standard Time due to it being connected by rail to Adelaide but not Sydney at the time. In May 1899, South Australia advanced Central Standard Time by thirty minutes ( see above ), disregarding the common international practice of setting one - hour intervals between adjacent time zones. In doing so, South Australia also adopted a time meridian located outside its boundaries -- another departure from international convention. Attempts to correct these oddities in 1986 and 1994 were rejected. When the Northern Territory was separated from South Australia and placed under the jurisdiction of the Federal Government, that Territory kept Central Standard Time. Likewise, when the ACT was broken off from New South Wales, it retained Eastern Standard Time. Since 1899, the only major changes in Australian time zones have been the setting of clocks to one - half hour earlier than Eastern time ( GMT plus 10 : 30 ) on the territory of Lord Howe Island, and Norfolk Island changing from UTC + 11 : 30 to UTC + 11 : 00 on 4 October 2015. When abbreviating `` Australian Central Time '' and `` Australian Eastern Time '', in domestic contexts the leading `` Australian '' may be omitted ; however, the prefix `` A '' is often used to avoid ambiguity with the time zone abbreviations `` CST '' and `` EST '' referring to the Central and Eastern Time Zones in North America. Civil time and legislation Though the governments of the states and territories have the power to legislate variations in time, the standard time within each of these is set related to Coordinated Universal Time ( UTC ) as determined by the International Bureau of Weights and Measures and set by section 8AA of the National Measurement Act of 1960 of the Commonwealth. Australia has kept a version of the UTC atomic time scale since the 1990s, but Greenwich Mean Time ( GMT ) remained the formal basis for the standard times of all of the states through 2005. In November 2004, the state and territory attorneys - general endorsed a proposal from the Australian National Measurement Institute to adopt UTC as the standard of all Australian standard times, thereby eliminating the effects of slight variations in the rate of rotation of the Earth that are inherent in mean solar time. All states have adopted the UTC standard, starting on 1 September 2005. In Victoria, South Australia, Tasmania and the ACT, the starting and ending dates of daylight saving times are officially determined by proclamations, declarations, or regulation made by the State Governor or by the responsible minister. Such instruments may be valid for only the current year, and so this section generally only refers to the legislation. In New South Wales and Western Australia, the starting and ending dates, if any, are to be set by legislation. Western Standard Time ( WST ) -- UTC + 08 : 00 Western Australia -- Standard Time Act 2005 Central Standard Time ( ACST ) -- UTC + 09 : 30 South Australia -- Standard Time Act 2009 and the Daylight Saving Act 1971 Northern Territory -- Standard Time Act 2005 Eastern Standard Time ( AEST ) -- UTC + 10 : 00 Queensland -- Standard Time Act 1894 New South Wales -- Standard Time Act 1987 No 149 Australian Capital Territory -- Standard Time and Summer Time Act 1972 Victoria -- Summer Time Act 1972 Tasmania -- Standard Time Act 1895 and the Daylight Saving Act 2007 Time offsets during standard time Time offsets during daylight - saving time ( from southern hemisphere spring until autumn ) Daylight Saving time ( DST ) Main article : Daylight saving time in Australia Play media A vox - pop from the ABC in Tasmania when DST was introduced in the 1970s The choice of whether to use DST is a matter for the governments of the individual states and territories. However, during World War I and World War II all states and territories used daylight saving time ( DST ). In 1968 Tasmania became the first state in peacetime to use DST, followed in 1971 by New South Wales, Victoria, Queensland, South Australia, and the Australian Capital Territory. Western Australia and the Northern Territory did not adopt it. Queensland abandoned DST in 1972. Queensland and Western Australia have occasionally used DST during the past 40 years during trial periods. The main DST zones are the following : ( Australian ) Central Daylight Saving Time ( CDST or ACDST ) -- UTC + 10 : 30, in South Australia ( Australian ) Eastern Daylight Saving Time ( EDST or AEDST ) -- UTC + 11, in New South Wales, the ACT, Victoria, and Tasmania During the usual periods of DST, the three standard time zones in Australia become five zones. This includes the areas that do not observe DST : Western Australia ( UTC plus 8 : 00 ), the Northern Territory ( UTC plus 9 : 30 ), and Queensland ( UTC plus 10 : 00 ). The change to and from DST takes place at 2 : 00 am local standard time the appropriate Sunday. Until 2008, DST usually began on the last Sunday in October, and ended on the last Sunday in March. However, Tasmania, given its latitude further south, began DST earlier, on the first Sunday in October, and ended it later, on the first Sunday of April. On 12 April 2007, New South Wales, Victoria, Tasmania, and the ACT agreed to common beginning and ending dates for DST from 2008. DST in these states and South Australia began on the first Sunday in October and ended on the first Sunday in April. Western Australia was then the only state to use DST from the last Sunday in October to the last Sunday in March, but it abolished DST in 2009. State / territory Start of DST End of DST Western Australia N / A Queensland Northern Territory South Australia first Sunday in October first Sunday in April New South Wales Australian Capital Territory Victoria Tasmania Anomalies Road sign near Broken Hill Yancowinna County in New South Wales The town of Broken Hill ( specified as Yancowinna County ), is in far western New South Wales. Unlike the rest of New South Wales, Broken Hill ( and the surrounding region ) observes Australian Central Standard Time ( UTC + 9 : 30 ), a time zone it shares with South Australia and the Northern Territory. As mentioned above, at the time standard time was adopted, Broken Hill was linked by rail to Adelaide, not Sydney. Lord Howe Island, part of the state of New South Wales but 600 kilometres ( 370 mi ) east of the Australian mainland in the Pacific Ocean, uses UTC + 10 : 30 during the winter months ( 30 minutes ahead of the eastern states ), but advances to UTC + 11 : 00 in summer ( the same time as the rest of New South Wales ). A compromise between Western and Central time ( UTC + 8 : 45, without DST ), unofficially known as Central Western Standard Time, is used in one area in the southeastern corner of Western Australia and one roadhouse in South Australia. Towns east of Caiguna on the Eyre Highway ( including Eucla, Madura, Mundrabilla and Border Village, just over the border into South Australia ), follow `` CWST '' instead of Western Australian time. The total population of that area is estimated at 200 people. This area did not change when South Australia introduced DST. During the Western Australian trial of DST from 2006 to 2009, this area also sets its clocks ahead one hour during summer. This time zone is not officially recognised. The Indian Pacific train has its own time zone -- a so - called `` train time '' when travelling between Kalgoorlie, Western Australia and Port Augusta, South Australia -- which was at UTC plus 9 : 00 hours during November 2005 when DST was observed in the eastern and southern states. External territories Australia 's external territories follow different time zones. Territory Standard DST Heard and McDonald Islands UTC + 05 : 00 no DST Cocos ( Keeling ) Islands CCT UTC + 06 : 30 no DST Christmas Island CXT UTC + 07 : 00 no DST Norfolk Island NFT UTC + 11 : 00 no DST Australian Antarctic Territory -- Mawson UTC + 05 : 00 no DST Australian Antarctic Territory -- Davis UTC + 07 : 00 no DST Australian Antarctic Territory -- Casey UTC + 11 : 00 no DST Special events In 2000, all of the eastern jurisdictions that normally observe DST -- New South Wales, Victoria, the ACT, and Tasmania -- began DST early because of the Summer Olympic Games held in Sydney. These jurisdictions moved to DST on 27 August 2000. South Australians did not change their clocks until the usual date, which was 29 October 2000. In 2006, all of the states that followed DST ( the above states and South Australia ) delayed their return to Standard Times by one week, because of the Commonwealth Games held in Melbourne. DST ended on 2 April 2006. National times There are situations in which a nationwide time is in effect. In the case of business activities, a national time can be used. For example, a prospectus for the issue of stock in a company would usually set the closing time for offers at some location ( e.g. Sydney ) as the time when offers must be received, regardless of the source of the offer. Similarly, tenders for their sale of stock usually set out the time at a given location by which they must be received to be considered. Another example is the Australian Stock Exchange which operates on Eastern Standard Time. On the other hand, Federal legislation yields to state - regulated standard times in many diverse situations. For example, it yields in setting the normal working times of Federal employees, the recognition of public holidays, etc. The Federal government also relies on local times for Federal elections, so that the polls in Western Australia close two or three hours after those in the eastern states. Also, documents to be filed in a Federal Court may be filed based on the local time. The effect of this is that if there had been a failure to file a legal document on time in an eastern State, that document can sometimes still be filed ( within two hours ) in Western Australia. IANA time zone database The 13 zones for Australia as given by zone. tab of the IANA time zone database. Columns marked * are from the zone. tab. no. c.c. * coordinates * TZ * comments * Standard time Summer time 1 AU - 3133 + 15905 Australia / Lord_Howe Lord Howe Island w - UTC + 10 : 30 wUTC + 11 ( half hour difference only ) 2 AQ - 5430 + 15857 Antarctica / Macquarie Macquarie Island wUTC + 11 - 3 AU - 4253 + 14719 Australia / Hobart Tasmania - most locations vUTC + 10 wUTC + 11 4 AU - 3956 + 14352 Australia / Currie Tasmania - King Island vUTC + 10 wUTC + 11 5 AU - 3749 + 14458 Australia / Melbourne Victoria vUTC + 10 wUTC + 11 6 AU - 3352 + 15113 Australia / Sydney New South Wales - most locations vUTC + 10 wUTC + 11 7 AU - 3157 + 14127 Australia / Broken_Hill New South Wales - Yancowinna v - UTC + 09 : 30 w - UTC + 10 : 30 8 AU - 2728 + 15302 Australia / Brisbane Queensland - most locations vUTC + 10 - 9 AU - 2016 + 14900 Australia / Lindeman Queensland - Holiday Islands vUTC + 10 - 10 AU - 3455 + 13835 Australia / Adelaide South Australia v - UTC + 09 : 30 w - UTC + 10 : 30 11 AU - 1228 + 13050 Australia / Darwin Northern Territory v - UTC + 09 : 30 - 12 AU - 3157 + 11551 Australia / Perth Western Australia - most locations tUTC + 08 - 13 AU - 3143 + 12852 Australia / Eucla Western Australia - Eucla area u / UTC + 08 : 45 - 14 NF - 2903 + 16758 Pacific / Norfolk u / UTC + 11 - Debate, trials and referendums Queensland Queensland has had a particularly involved debate over daylight saving time, with public opinion geographically divided. A referendum on DST in 1992, following a three - year trial ( 1989 / 90 -- 1991 / 92 ), and was defeated with a 54.5 percent negative vote. The referendum result displayed a distinct trend -- that public opinion on DST in Queensland is geographically divided, with the negative vote being strongest in northern and western districts, while the positive vote being strongest in the southeastern region ( e.g. in Brisbane ). Since the late 1900s, there have been a number of petitions submitted to Legislative Assembly of Queensland, lobbying for the introduction of daylight saving time or for another referendum to be held. A petition in 2006 was signed by 62,232 people. In response to these petitions, then Queensland Premier Peter Beattie commissioned research to find out if it should be re-introduced into Queensland. Around this time, Premier Peter Beattie predicted that daylight saving in Queensland would increase the rate of skin cancer in the state, an assertion for which there is no evidence, according to the Queensland Cancer Fund. In October 2007, the government - commissioned research was presented to the new Premier Anna Bligh, who ruled out holding a new referendum, despite the report indicating that 59 percent of the residents of Queensland and 69 percent of those in southeastern Queensland to be in favour of adopting daylight saving. In December 2008, the Daylight Saving for South East Queensland ( DS4SEQ ) political Party was officially registered, to advocate for the use of a two - time - zone system for DST in Queensland, with most of the state ( in land area ) using standard time. This party contested the March 2009 Queensland State election with 32 candidates, and it received about one percent of the statewide primary vote. In early 2010, the DS4SEQ political party approached the independent member, Peter Wellington, to introduce a private member 's bill for DST. Since Mr. Wellington agreed with the principles of the DS4SEQ proposal, specifically the dual - time - zone system, he drafted the DST for southeastern Queensland Referendum Bill of 2010 and he submitted this bill to Queensland Parliament on 14 April 2010. Wellington has called for a referendum to be held at the next state election on the introduction of DST into southeastern Queensland under the dual - time - zone system. In response to this bill, the Premier of Queensland, Anna Bligh, announced a community consultation process, which resulted in over 74,000 respondents participating, 64 percent of whom voted in favour of a trial, and 63 percent of whom were in favour of holding a referendum. The decision announced by the Premier on 7 June 2010 was that her Government would not support the bill because rural Queenslanders were overwhelmingly opposed to DST. The Bill was defeated in Queensland Parliament on 15 June 2011. Western Australia Western Australia has also had a particularly involved debate over DST, with the issue being put to a referendum four times : in 1975, 1984, 1992, and 2009. All of these proposals to adopt DST were defeated. Voters registered a negative vote of 54.6 percent in the 2009 referendum, the highest percentage for all four of these referendums. Each referendum followed a trial period during which the state observed DST. The first three followed a one - year trial, while the 2006 Western Australian Daylight Saving Bill ( No. 2 ) 2006 instituted a trial of DST beginning on 3 December 2006, and lasting for three years. See also Australia portal List of time zones Daylight Saving for South East Queensland Daylight Saving for South East Queensland Referendum Act 2010 Queensland daylight saving referendum, 1992 Notes Jump up ^ `` Official Australian government website ''. australia.gov.au. Retrieved 25 June 2010. Jump up ^ Daylight Saving in New South Wales Lawlink NSW. Retrieved 28 January 2012 ^ Jump up to : `` THE NEW STANDARD TIME. ''. The Advertiser ( Adelaide, SA : 1889 - 1931 ). Adelaide, SA : National Library of Australia. 1 May 1899. p. 4. Retrieved 6 February 2015. Jump up ^ Hardgrave, Gary ( 3 September 2015 ). `` Norfolk Island standard time changes 4 October 2015 '' ( Press release ). Administrator of Norfolk Island. Retrieved 4 October 2015. Jump up ^ ( 1 ) Jump up ^ `` slp.wa.gov '' ( PDF ). Retrieved 20 September 2011. Jump up ^ `` South Australian Legislation ''. Legislation.sa.gov.au. Retrieved 25 June 2010. Jump up ^ `` South Australian Legislation ''. Legislation.sa.gov.au. Retrieved 25 June 2010. Jump up ^ `` STANDARD TIME ACT 2005 ''. Notes.nt.gov.au. Retrieved 25 June 2010. Jump up ^ `` legislation.qld.gov '' ( PDF ). Retrieved 20 September 2011. Jump up ^ `` Standard Time Act 1987 No 149 ''. Legislation.nsw.gov.au. Retrieved 21 June 2013. Jump up ^ `` ACT legislation register -- Standard Time and Summer Time Act 1972 -- main page ''. Legislation.act.gov.au. Retrieved 25 June 2010. Jump up ^ `` SUMMER TIME ACT 1972. Version incorporating amendments as at 31 May 2012 ''. 31 May 2012. Retrieved 23 October 2012. Jump up ^ `` STANDARD TIME ACT 1895 ''. 23 August 1895. Retrieved 23 October 2012. Jump up ^ `` Legislation View Page ''. Thelaw.tas.gov.au. Retrieved 25 June 2010. Jump up ^ `` Daylight Saving Time -- Implementation ''. Bom.gov.au. Retrieved 25 June 2010. Jump up ^ `` Daylight Saving in Victoria ( Victoria Online ) ''. Vic.gov.au. 21 September 2006. Retrieved 25 June 2010. Jump up ^ Arrow, Bettina ( 16 December 2016 ). `` Busy year wraps up for quarantine inspectors on Western Australia 's border ''. ABC News. Retrieved 8 March 2017. Jump up ^ `` Border sign ''. Confluence.org. Retrieved 25 June 2010. Jump up ^ `` 1992 Queensland Daylight Saving Referendum '' ( PDF ). Retrieved 25 July 2010. Jump up ^ Queensland Parliamentary Library ; Research Brief No 2010 / 22 - Mary Westcott ( July 2010 ). `` 1992 Daylight Saving in Queensland '' ( PDF ). pp. 15, 19. Retrieved 29 January 2011. Jump up ^ `` Daylight Saving Petition ''. Retrieved 25 July 2010. Jump up ^ `` Daylight saving cancer claim disputed ''. The Sydney Morning Herald. Fairfax Media. 24 October 2006. Retrieved 25 June 2013. Jump up ^ `` Queensland Government - commissioned Daylight Saving Research '' ( PDF ). Retrieved 25 July 2010. Jump up ^ `` Total Candidates Nominated for Election by Party -- 2009 State Election ''. Electoral Commission of Queensland ( ECQ ). Retrieved 19 June 2010. Jump up ^ `` The Political Mouse that Roared ''. 16 April 2010. Retrieved 19 June 2010. Jump up ^ `` Daylight Saving for South East Queensland Referendum Bill 2010 '' ( PDF ). 14 April 2010. Retrieved 25 July 2010. Jump up ^ `` Queensland Government Daylight Saving for South East Queensland survey ''. Retrieved 25 July 2010. Jump up ^ `` Queensland Government Daylight Saving for South East Queensland decision ''. Retrieved 25 July 2010. Jump up ^ `` Daylight saving silence ' deafening ' ''. 16 June 2011. Retrieved 19 June 2011. Jump up ^ `` Microsoft Word - D01 Daylight Saving Bill _No. 2_ 2006 _175 - 1B_. doc '' ( PDF ). Retrieved 25 June 2010. References The Australian National Time System National Standards Commission Leaflet No. 8, January 2003, linked via Wayback Machine NSW Legislative Council Hansard, 2 March 2005 Daylight Saving Petitions Daylight Saving Time - history of daylight saving time implementation dates at the Bureau of Meteorology website External links Information on time zones from official Government web site Daylight Saving for South East Queensland political party Official DS4SEQ website Time in Oceania Sovereign states Australia Federated States of Micronesia Fiji Kiribati Marshall Islands Nauru New Zealand Palau Papua New Guinea Samoa Solomon Islands Tonga Tuvalu Vanuatu Associated states of New Zealand Cook Islands Niue Dependencies and other territories American Samoa Christmas Island Cocos ( Keeling ) Islands Easter Island French Polynesia Guam Hawaii New Caledonia Norfolk Island Northern Mariana Islands Pitcairn Islands Tokelau Wallis and Futuna... Retrieved from `` https://en.wikipedia.org/w/index.php?title=Time_in_Australia&oldid=786196750 '' Categories : Time in Australia Science and technology in Australia Australian standards Hidden categories : Articles needing additional references from August 2012 All articles needing additional references All articles with unsourced statements Articles with unsourced statements from November 2011 Use dmy dates from November 2012 Articles containing video clips Talk Article Talk More Contents About Wikipedia Čeština Deutsch Ελληνικά Español Bahasa Indonesia Bahasa Melayu 日本 語 Norsk Română Русский Simple English தமிழ் Українська اردو Tiếng Việt Edit links This page was last edited on 17 June 2017, at 22 : 13. Text is available under the Creative Commons Attribution - ShareAlike License ; additional terms may apply. By using this site, you agree to the Terms of Use and Privacy Policy. Wikipedia ® is a registered trademark of the Wikimedia Foundation, Inc., a non-profit organization. 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Question: how many different time zones does australia have
Answer: three