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For time in Northern Ireland, see Time in the United Kingdom.

Ireland uses Irish Standard Time (IST, UTC+01:00; Irish: Am Caighdeánach Éireannach) in the summer months and Greenwich Mean Time (UTC+00:00; Meán-Am Greenwich) in the winter period. (Roughly half of the state is in the 7.5°W to 22.5°W sector, half is in the same sector as Greenwich: 7.5°E to 7.5°W).

In Ireland, the Standard Time Act 1968 legally established that the time for general purposes in the State (to be known as standard time) shall be one hour in advance of Greenwich mean time throughout the year. This act was amended by the Standard Time (Amendment) Act 1971, which legally established Greenwich Mean Time as a winter time period. Ireland therefore operates one hour behind standard time during the winter period, and reverts to standard time in the summer months. This is defined in contrast to the other states in the European Union, which operate one hour ahead of standard time during the summer period, but produces the same end result.

The instant of transition to and from daylight saving time is synchronised across Europe. In Ireland, winter time begins at 02:00 IST on the last Sunday in October (changing the clocks to 01:00 GMT), and ends at 01:00 GMT on the last Sunday in March (changing to 02:00 IST).

The following table lists recent past and near-future starting and ending dates of Irish Standard Time or Irish Summer Time (use of DST beyond 2019 is under discussion, see below):

Year Start End
2019 31 March 27 October
2020 29 March 25 October
2021 28 March 31 October
2022 27 March 30 October
2023 26 March 29 October
2024 31 March 27 October
2025 30 March 26 October
2026 29 March 25 October

Contents

Time (Ireland) Act 1916

Before 1880, the legal time at any place in the United Kingdom of Great Britain and Ireland was defined as local mean time, as held by the appeal in the 1858 court case Curtis v. March. The Statutes (Definition of Time) Act, 1880 definedDublin Mean Time as the legal time for Ireland. This was the local mean time at Dunsink Observatory outside Dublin, and was about 25 minutes 21 seconds behind Greenwich Mean Time (GMT), which was defined by the same act to be the legal time for Great Britain. After the Easter Rising, the time difference between Ireland and Britain was found inconvenient for telegraphic communication and the Time (Ireland) Act, 1916 provided that Irish time would be the same as British time, from 2:00 am Dublin Mean Time on Sunday 1 October 1916. Summer time (daylight saving time) had been introduced in May 1916 across the United Kingdom as a temporary efficiency measure for the First World War, and the changeover from Dublin time to Greenwich time was simultaneous with the changeover from summer time to winter time. John Dillon opposed the first reading of the Time (Ireland) Bill for having been introduced without consultation of the Irish Parliamentary Party; he said the different time in Ireland "reminds us that we are coming into a strange country". T. M. Healy opposed the second reading on the basis that "while the Daylight Saving Bill added to the length of your daylight, this Bill adds to the length of your darkness".

After the Irish Free State became independent in 1922, subsequent developments tended to mirror those in the United Kingdom. This avoided having different times on either side of the border with Northern Ireland. Summer time was provided on a one-off basis by acts in 1923 and 1924, and then on an ongoing basis by the Summer Time Act, 1925. The 1925 act provided a default summer time period, which could be varied by ministerial order. Double summer time was considered but not introduced during the Emergency of World War II. As a consequence, following the introduction of double summer time in the United Kingdom in 1940, Northern Ireland was one hour ahead of the Republic of Ireland throughout the year until the UK returned to GMT in the autumn of 1947.

From 1968 standard time (GMT+01:00) was observed all year round, with no winter time change. This was an experiment in the run-up to Ireland's 1973 accession to the EEC, and was undone in 1971. In those years, time in Ireland was the same as in the six EEC countries, except in the summer in Italy, which switched to Central European Summer Time (CEST). One artefact of the 1968 legislation is that "standard time" (Irish: am caighdeánach) legally refers to summer time; the 1971 act defined a period of time in the winter as "winter time" during which the time observed would be GMT, leaving "standard time" unchanged.

From the 1980s, the dates of switch between winter and summer time have been synchronised across the European Union.

Orders

The statutory instruments (SIs) that have been issued under the Standard Time Acts are listed below, in the format year/SI-number, and linking to the Irish Statute Database text of the SI. Except where stated, those issued up to 1967 (under the 1925 Act) were called "Summer Time Order <year>", while those issued from 1981 (under the 1971 Act) are "Winter Time Order <year>".

1926/(unnumbered), 1947/71, 1948/128, 1949/23, 1950/41, 1951/27, 1952/73, 1961/11, 1961/232 (Summer Time (No. 2) Order 1961), 1962/182, 1963/167, 1964/257, 1967/198, 1981/67, 1982/212, 1986/45, 1988/264, 1990/52, 1992/371, 1994/395, 1997/484, 2001/506

Possible adjustments to the Irish practice were discussed by the Oireachtas joint committee on Justice, Defence and Equality in November 2011, but the government stated it had no plans to change. In November 2012, Tommy Broughan introduced a private member's bill to permit a three-year trial of advancing time by one hour, to CET in winter and CEST in summer. Debate on the bill's second stage was adjourned on 5 July 2013, when Alan Shatter, the Minister for Justice and Equality, agreed to refer the matter to the joint committee for review, and suggested that it consult with the British parliament and devolved assemblies. In July 2014, the joint committee issued an invitation for submissions on the bill.

On 8 February 2018, the European Parliament voted to ask the European Commission to re-evaluate the principle of Summer Time in Europe. After a web survey showing high support for not switching clocks twice annually, on 12 September 2018 the European Commission decided to propose that an end be put to seasonal clock changes (repealing Directive 2000/84/EC) In order for this to be valid, the European Union legislative procedure must be followed, mainly that the Council of the European Union and the European Parliament must both approve the proposal. The United Kingdom left the EU on 31 January 2020 and, if the UK does not follow the reform and continues to operate summer/winter time, Northern Ireland will have a one-hour time difference for half the year either with the rest of Ireland or with the United Kingdom. As this would add a further complication to the Irish border question, it remains to be seen what action the Irish Government would take should this happen. The Department of Justice and Equality ran a consultation on seasonal clock changes in November 2018. As of September 2018[update], the UK Government "has no plans" to end daylight saving. In July 2019, the Minister for Justice and Equality announced that while there was support for ending daylight saving time, the proposal was not straightforward and Ireland would oppose the end of seasonal clock changes. At the same time, a report of an interdepartmental working group on the proposal was published, along with submissions to the consultation on seasonal clock changes.

Seán Kelly, MEP, has been lobbying to end the bi-annual clock change in the EU, but is in favour of Ireland adopting year round summertime or Central European Time instead of its present, closer to solar time, Western European Time.

Closing time in Irish public houses was half an hour later during summer time (23:30 instead of 23:00). In 2000, the closing time hours were simplified by removing summer/winter time changes. Between 1933 and 1961, lighting-up time was an hour before/after sunrise/sunset in summer-time, as opposed to half an hour in winter time. Since 1961, it has been half an hour in all cases. A similar change in the definition of night for aviation was made in 1967.

The IANA time zone database contains one zone for Ireland in the file zone.tab, named Europe/Dublin.

  1. Standard Time (Amendment) Act, 1971
  2. Standard Time Act, 1968
  3. "Topical Issue Debate – Daylight Saving Time". Dáil Debates. 26 October 2011. p. 19.
  4. "S.I. No. 506/2001 – Winter Time Order, 2001". 24 October 2001.
  5. Dyson, Frank Watson (November 1916). "Standard time in Ireland". The Observatory. 39: 467–468. Bibcode:1916Obs....39..467D.
  6. Whitrow, G. J. (1989). Time in History: Views of Time from Prehistory to the Present Day. Oxford University Press. pp. 164–165. ISBN 9780192852113.
  7. Statutes (Definition of Time) Act, 1880 (43 & 44 Vict. c. 9)
  8. Malone, David. "Dunsink and Timekeeping". Ireland. Retrieved17 August 2012.
  9. Time (Ireland) Act, 1916 (6 & 7 Geo. 5. c. 45)
  10. Shorten, Ben. "Here comes the summer: how Daylight Saving Time came to Ireland". Century Ireland. RTÉ.ie. Retrieved21 May 2016.
  11. "Time (Ireland) Bill". Hansard. 1 August 1916. HC Deb vol 85 cc72–5. Retrieved21 May 2016.
  12. "Time (Ireland) Bill". Hansard. 17 August 1916. HC Deb vol 85 cc2222–36. Retrieved21 May 2016.
  13. Dáil debates Vol.760 No.3 p.342
  14. Summer Time Act 1923 Archived 22 October 2013 at the Wayback Machine Irish Statute Book
  15. Summer Time Act 1924 Archived 22 October 2013 at the Wayback Machine Irish Statute Book
  16. "Summer Time Act, 1925". Irish Statute Book. Ireland: Attorney General. Retrieved17 August 2012.
  17. Dáil debates Vol.93 No.8 p.11 c.1021 Oireachtas
  18. Kennedy, Michael J. (2008). Guarding neutral Ireland: the Coast Watching Service and military intelligence, 1939–1945. Four Courts Press. p. 144. ISBN 9781846820977.
  19. Luke Sproule (30 March 2019). "Time zones: When Ireland had two". Retrieved6 November 2019.
  20. "Standard Time". Retrieved10 October 2016.
  21. Seanad debates Vol.111 No.13 p.6 c.1212–14 Oireachtas
  22. Joint Committee on Justice, Defence and Equality (30 November 2011). "Autumn and Spring Time Adjustments: Discussion". Retrieved18 August 2012.
  23. "Brighter Evenings Bill 2012 -PMB- (Bill Number 96 of 2012)". Bills 1992–2012. Oireachtais. Retrieved28 November 2012.
  24. "Brighter Evenings Bill – Second Stage". Dáil debates. 5 July 2013. Retrieved24 September 2013.
  25. "Written Answer No.1096: Daylight Savings". Dáil debates. 18 September 2013. Retrieved24 September 2013.
  26. Oireachtas joint committee on Justice, Defence and Equality (28 July 2014). "Invitation for submissions – Brighter Evenings Bill"(Microsoft Word). Submissions. Oireachtas. Retrieved15 January 2015.
  27. "EU Parliament Votes to Re-Evaluate DST in Europe". www.timeanddate.com.
  28. Summertime Consultation: 84% want Europe to stop changing the clock
  29. State of the Union 2018: Q&A on the Commission's proposal to put an end to seasonal clock changes European Commission − Press Release (Strasbourg, 12 September 2018)
  30. EU daylight saving switch could leave Northern Ireland out of step with rest of UK
  31. "Consultation on Seasonal Clock Changes". www.justice.ie.
  32. Northern Ireland won't change time zone to suit the EU, say unionistsBelfast Telegraph, 1 September 2018
  33. "Ireland to oppose ending of seasonal clock changes". www.justice.ie.
  34. “High time to end bi-annual clock change” – MEP Kelly
  35. Keep summer time year round: MEP Kelly
  36. Intoxicating Liquor Act, 1988 §§25,26,28 Archived 22 October 2013 at the Wayback Machine; Intoxicating Liquor Act, 1995 §§4,5. Irish Statute Book.
  37. Intoxicating Liquor Act, 2000 §§2. Irish Statute Book.
  38. Road Traffic Act 1933 §3; repealed by Road Traffic Act 1961
  39. S.I. No. 272/1967 — Air Navigation (Rules of the Air) (Amendment) (No. 2) Order, 1967
  40. Europe (2020 edition) at the tz database. Internet Assigned Numbers Authority (IANA). Retrieved 20 May 2021.

Time in the Republic of Ireland Article Talk Language Watch Edit For time in Northern Ireland see Time in the United Kingdom Ireland uses Irish Standard Time IST UTC 01 00 Irish Am Caighdeanach Eireannach in the summer months and Greenwich Mean Time UTC 00 00 Mean Am Greenwich in the winter period 1 Roughly half of the state is in the 7 5 W to 22 5 W sector half is in the same sector as Greenwich 7 5 E to 7 5 W Time in Europe Western European Time Greenwich Mean Time UTC Western European Time Greenwich Mean Time UTC Western European Summer Time British Summer Time Irish Standard Time UTC 1 Central European Time UTC 1 Central European Summer Time UTC 2 Eastern European Time Kaliningrad Time UTC 2 Eastern European Time UTC 2 Eastern European Summer Time UTC 3 Moscow Time Turkey Time UTC 3 Armenia Time Azerbaijan Time Georgia Time UTC 4 pale colours standard time observed all year dark colours summer time observed In Ireland the Standard Time Act 1968 legally established that the time for general purposes in the State to be known as standard time shall be one hour in advance of Greenwich mean time throughout the year 2 This act was amended by the Standard Time Amendment Act 1971 which legally established Greenwich Mean Time as a winter time period 1 Ireland therefore operates one hour behind standard time during the winter period and reverts to standard time in the summer months This is defined in contrast to the other states in the European Union which operate one hour ahead of standard time during the summer period but produces the same end result The instant of transition to and from daylight saving time is synchronised across Europe In Ireland winter time begins at 02 00 IST on the last Sunday in October changing the clocks to 01 00 GMT and ends at 01 00 GMT on the last Sunday in March changing to 02 00 IST 3 4 The following table lists recent past and near future starting and ending dates of Irish Standard Time or Irish Summer Time use of DST beyond 2019 is under discussion see below Year Start End2019 31 March 27 October2020 29 March 25 October2021 28 March 31 October2022 27 March 30 October2023 26 March 29 October2024 31 March 27 October2025 30 March 26 October2026 29 March 25 OctoberContents 1 History 1 1 Orders 2 Possible changes 3 Other laws 4 IANA time zone database 5 ReferencesHistory Edit Time Ireland Act 1916 Before 1880 the legal time at any place in the United Kingdom of Great Britain and Ireland was defined as local mean time as held by the appeal in the 1858 court case Curtis v March 5 6 The Statutes Definition of Time Act 1880 defined Dublin Mean Time as the legal time for Ireland This was the local mean time at Dunsink Observatory outside Dublin and was about 25 minutes 21 seconds behind Greenwich Mean Time GMT which was defined by the same act to be the legal time for Great Britain 5 7 8 After the Easter Rising the time difference between Ireland and Britain was found inconvenient for telegraphic communication and the Time Ireland Act 1916 provided that Irish time would be the same as British time from 2 00 am Dublin Mean Time on Sunday 1 October 1916 5 9 Summer time daylight saving time had been introduced in May 1916 across the United Kingdom as a temporary efficiency measure for the First World War and the changeover from Dublin time to Greenwich time was simultaneous with the changeover from summer time to winter time 10 John Dillon opposed the first reading of the Time Ireland Bill for having been introduced without consultation of the Irish Parliamentary Party he said the different time in Ireland reminds us that we are coming into a strange country 10 11 T M Healy opposed the second reading on the basis that while the Daylight Saving Bill added to the length of your daylight this Bill adds to the length of your darkness 12 After the Irish Free State became independent in 1922 subsequent developments tended to mirror those in the United Kingdom This avoided having different times on either side of the border with Northern Ireland 3 13 Summer time was provided on a one off basis by acts in 1923 and 1924 14 15 and then on an ongoing basis by the Summer Time Act 1925 16 The 1925 act provided a default summer time period which could be varied by ministerial order Double summer time was considered but not introduced during the Emergency of World War II 17 18 As a consequence following the introduction of double summer time in the United Kingdom in 1940 Northern Ireland was one hour ahead of the Republic of Ireland throughout the year until the UK returned to GMT in the autumn of 1947 19 From 1968 standard time GMT 01 00 was observed all year round with no winter time change 2 This was an experiment in the run up to Ireland s 1973 accession to the EEC and was undone in 1971 1 In those years time in Ireland was the same as in the six EEC countries except in the summer in Italy which switched to Central European Summer Time CEST One artefact of the 1968 legislation is that standard time Irish am caighdeanach 20 legally refers to summer time 2 the 1971 act defined a period of time in the winter as winter time during which the time observed would be GMT leaving standard time unchanged 1 From the 1980s the dates of switch between winter and summer time have been synchronised across the European Union 3 21 Orders Edit The statutory instruments SIs that have been issued under the Standard Time Acts are listed below in the format year SI number and linking to the Irish Statute Database text of the SI Except where stated those issued up to 1967 under the 1925 Act were called Summer Time Order lt year gt while those issued from 1981 under the 1971 Act are Winter Time Order lt year gt 1926 unnumbered 1947 71 1948 128 1949 23 1950 41 1951 27 1952 73 1961 11 1961 232 Summer Time No 2 Order 1961 1962 182 1963 167 1964 257 1967 198 1981 67 1982 212 1986 45 1988 264 1990 52 1992 371 1994 395 1997 484 2001 506Possible changes EditSee also Summer time in Europe Possible adjustments to the Irish practice were discussed by the Oireachtas joint committee on Justice Defence and Equality in November 2011 22 but the government stated it had no plans to change 13 In November 2012 Tommy Broughan introduced a private member s bill to permit a three year trial of advancing time by one hour to CET in winter and CEST in summer 23 Debate on the bill s second stage was adjourned on 5 July 2013 when Alan Shatter the Minister for Justice and Equality agreed to refer the matter to the joint committee for review and suggested that it consult with the British parliament and devolved assemblies 24 25 In July 2014 the joint committee issued an invitation for submissions on the bill 26 On 8 February 2018 the European Parliament voted to ask the European Commission to re evaluate the principle of Summer Time in Europe 27 After a web survey showing high support for not switching clocks twice annually 28 on 12 September 2018 the European Commission decided to propose that an end be put to seasonal clock changes repealing Directive 2000 84 EC 29 In order for this to be valid the European Union legislative procedure must be followed mainly that the Council of the European Union and the European Parliament must both approve the proposal The United Kingdom left the EU on 31 January 2020 and if the UK does not follow the reform and continues to operate summer winter time Northern Ireland will have a one hour time difference for half the year either with the rest of Ireland or with the United Kingdom 30 As this would add a further complication to the Irish border question 30 it remains to be seen what action the Irish Government would take should this happen The Department of Justice and Equality ran a consultation on seasonal clock changes in November 2018 31 As of September 2018 update the UK Government has no plans to end daylight saving 32 In July 2019 the Minister for Justice and Equality announced that while there was support for ending daylight saving time the proposal was not straightforward and Ireland would oppose the end of seasonal clock changes 33 At the same time a report of an interdepartmental working group on the proposal was published along with submissions to the consultation on seasonal clock changes Sean Kelly MEP has been lobbying to end the bi annual clock change in the EU 34 but is in favour of Ireland adopting year round summertime or Central European Time instead of its present closer to solar time Western European Time 35 Other laws EditClosing time in Irish public houses was half an hour later during summer time 23 30 instead of 23 00 36 In 2000 the closing time hours were simplified by removing summer winter time changes 37 Between 1933 and 1961 lighting up time was an hour before after sunrise sunset in summer time as opposed to half an hour in winter time 38 Since 1961 it has been half an hour in all cases A similar change in the definition of night for aviation was made in 1967 39 IANA time zone database EditThe IANA time zone database contains one zone for Ireland in the file zone tab named Europe Dublin 40 References Edit a b c d Standard Time Amendment Act 1971 a b c Standard Time Act 1968 a b c Topical Issue Debate Daylight Saving Time Dail Debates 26 October 2011 p 19 S I No 506 2001 Winter Time Order 2001 24 October 2001 a b c Dyson Frank Watson November 1916 Standard time in Ireland The Observatory 39 467 468 Bibcode 1916Obs 39 467D Whitrow G J 1989 Time in History Views of Time from Prehistory to the Present Day Oxford University Press pp 164 165 ISBN 9780192852113 Statutes Definition of Time Act 1880 43 amp 44 Vict c 9 Malone David Dunsink and Timekeeping Ireland Retrieved 17 August 2012 Time Ireland Act 1916 6 amp 7 Geo 5 c 45 a b Shorten Ben Here comes the summer how Daylight Saving Time came to Ireland Century Ireland RTE ie Retrieved 21 May 2016 Time Ireland Bill Hansard 1 August 1916 HC Deb vol 85 cc72 5 Retrieved 21 May 2016 Time Ireland Bill Hansard 17 August 1916 HC Deb vol 85 cc2222 36 Retrieved 21 May 2016 a b Dail debates Vol 760 No 3 p 342 Summer Time Act 1923 Archived 22 October 2013 at the Wayback Machine Irish Statute Book Summer Time Act 1924 Archived 22 October 2013 at the Wayback Machine Irish Statute Book Summer Time Act 1925 Irish Statute Book Ireland Attorney General Retrieved 17 August 2012 Dail debates Vol 93 No 8 p 11 c 1021 Oireachtas Kennedy Michael J 2008 Guarding neutral Ireland the Coast Watching Service and military intelligence 1939 1945 Four Courts Press p 144 ISBN 9781846820977 Luke Sproule 30 March 2019 Time zones When Ireland had two Retrieved 6 November 2019 Standard Time Retrieved 10 October 2016 Seanad debates Vol 111 No 13 p 6 c 1212 14 Oireachtas Joint Committee on Justice Defence and Equality 30 November 2011 Autumn and Spring Time Adjustments Discussion Retrieved 18 August 2012 Brighter Evenings Bill 2012 PMB Bill Number 96 of 2012 Bills 1992 2012 Oireachtais Retrieved 28 November 2012 Brighter Evenings Bill Second Stage Dail debates 5 July 2013 Retrieved 24 September 2013 Written Answer No 1096 Daylight Savings Dail debates 18 September 2013 Retrieved 24 September 2013 Oireachtas joint committee on Justice Defence and Equality 28 July 2014 Invitation for submissions Brighter Evenings Bill Microsoft Word Submissions Oireachtas Retrieved 15 January 2015 EU Parliament Votes to Re Evaluate DST in Europe www timeanddate com Summertime Consultation 84 want Europe to stop changing the clock State of the Union 2018 Q amp A on the Commission s proposal to put an end to seasonal clock changes European Commission Press Release Strasbourg 12 September 2018 a b EU daylight saving switch could leave Northern Ireland out of step with rest of UK Consultation on Seasonal Clock Changes www justice ie Northern Ireland won t change time zone to suit the EU say unionists Belfast Telegraph 1 September 2018 Ireland to oppose ending of seasonal clock changes www justice ie High time to end bi annual clock change MEP Kelly Keep summer time year round MEP Kelly Intoxicating Liquor Act 1988 25 26 28 Archived 22 October 2013 at the Wayback Machine Intoxicating Liquor Act 1995 4 5 Irish Statute Book Intoxicating Liquor Act 2000 2 Irish Statute Book Road Traffic Act 1933 3 repealed by Road Traffic Act 1961 S I No 272 1967 Air Navigation Rules of the Air Amendment No 2 Order 1967 Europe 2020 edition at the tz database Internet Assigned Numbers Authority IANA Retrieved 20 May 2021 Retrieved from https en wikipedia org w index php title Time in the Republic of Ireland amp oldid 1074186834, wikipedia, wiki, book,

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