Time in the Danish Realm explained

Denmark, including its dependencies of Faroe Islands and Greenland, uses six time zones.

AreaStandard timeDaylight timetz database
Europe/Copenhagen
EU transition dates Atlantic/Faroe
(no DST) America/Danmarkshavn
EU transition dates America/Scoresbysund
America/Godthab
America/Thule
The current time in Denmark is:
The current time in Greenland is:

Time zones

Central European Time

as standard time, and as daylight saving time, with transition dates according to the European Union rules.

The centerline (15°E) goes through Bornholm, approximately 2 kilometers from Gudhjem, in the far eastern Denmark, while Copenhagen at 12°34′E corresponds to UTC+0:50, and the west coast at 8°6′E corresponds to UTC+0:32.

An 1893 law set the de jure standard time of Denmark as the mean solar time 15°E of Greenwich, for all of Denmark, with an exception for the Faroe Islands, effective at 1 January 1894.[2] This linked the standard time in Denmark to Earth's rotation, and clocks in Denmark were at 12:00, when the sun is directly above the 15° Eastern meridian. As Earth's rotation is not completely regular, the time could be offset by up to 0.9 seconds in either direction, compared to UTC+1, requiring a leap second to be added to remedy the issue. On 14 March 2023, the Folketing adopted a proposal to set the de jure standard time of Denmark as UTC+1, with exceptions made for Greenland and the Faroe Islands. The proposal became effective law on 26 March 2023 at 2:00, superseding the 1893 law.[3] [4]

Western European Time

as standard time, and as daylight saving time.

The island of Mykines is actually located at 7°36′W longitude and thus at UTC-00:31 (closer to than UTC), however Mykines uses the same time zone as the rest of the Faroe Islands.

Greenwich Mean Time

year around, no daylight saving time

The area uses same time as Iceland (WET), since it is generally supplied from Iceland. This is however unofficial. In the summer the time is the same as for East Greenland time.

West Greenland Time

as standard time, and as daylight saving time.

Some places, such as Qaanaaq (69°13′W corresponding to UTC-04:37) and Kulusuk (37°11′W corresponding to UTC-02:28) are located outside the UTC-03:00 ± 00:30 zone, but still use the same time zone as the capital Nuuk (51°44′W corresponding to UTC-03:26:56)

Atlantic Time

as standard time, and as daylight saving time, with transition dates according to the United States rules.

Daylight saving time

All of Greenland uses Daylight Saving Time, except for the northeast coast. The transition dates are according to the European Union rules, except for the Pituffik Space Base, which uses United States transition dates and for which the following description does not apply.

DST starts at 01:00 UTC on the last Sunday in March and ends same time on the last Sunday in October each year in all affected areas.

That means that in Denmark proper, the transition is at 02:00 Local Standard Time (03:00 Daylight Saving Time) and in the Faroe Islands one hour earlier. In most of Greenland, the transition takes place at 23:00 Local Standard Time on the day before (00:00 Daylight Saving Time).

History

The first time a common time was used in Denmark, was in 1890, when Copenhagen local time was used as railway time. This was GMT+0:50:20 from Greenwich. In 1890 this time was introduced as a standard time for Denmark. In 1893, Denmark adopted the "Act on the Determination of Time", to connect to the international time zones, using Greenwich plus one hour, which set the standard time in Denmark as 12:00 when the sun is directly above 15°E, starting from 1 January 1894.[9] This is the local time of eastern Bornholm, leaving 99.5% of the country west of the time meridian (15°E), which has triggered some sarcastic comments (changing from Copenhagen time to Gudhjem time). However all of the country is located east of Greenwich +00:30 (7.5°E).

Daylight saving time was used in the years 1916, 1940, 1945-1948 and is used from 1980.[1]

The Faroe Islands introduced Greenwich Mean Time in 1908, and Iceland (then a Danish area) introduced GMT-01:00 at the same time (changed to GMT, permanent daylight saving time, in 1968). West Greenland introduced GMT-03:00 in 1916. Daylight saving time was introduced in the Faroe Islands in 1981.[1]

On 25 January 2023, Transport Minister, Thomas Danielsen made a proposal to overrule the 1893 law, with an act to set Danish standard time as UTC+1, with exceptions for Greenland and the Faroe Islands.[10] [11] On 14 March 2023, the Folketing adopted the proposal with unanimous consent, and the proposal came in effect as law on 26 March 2023, at 2:00.[12] [13] Greenland moved the time zone forward one hour simultaneously (on 25 March 2023 local time), after that using as the standard time.[14]

IANA time zone database

Data for Denmark directly from zone.tab of the IANA time zone database. Columns marked with * are the columns from zone.tab itself.

Notes and References

  1. Web site: IANA — Time Zone Database. 2020-06-17. www.iana.org. 2021-03-08. https://web.archive.org/web/20210308054746/https://www.iana.org/time-zones. live.
  2. Web site: Act on the Determination of Time. 29 March 1893. 27 March 2023. 26 March 2023. https://web.archive.org/web/20230326114301/https://www.retsinformation.dk/eli/lta/1893/83. live.
  3. Web site: L 19 Proposal for an Act on Danish Standard Time. Thomas Danielsen. 14 March 2023. 16 March 2023. 16 March 2023. https://web.archive.org/web/20230316201319/https://www.ft.dk/samling/20222/lovforslag/l19/20222_l19_som_vedtaget.htm. live.
  4. Web site: Proposal to Danish Standard Act. Thomas Danielsen. 14 March 2023. 16 March 2023. 16 March 2023. https://web.archive.org/web/20230316201317/https://www.ft.dk/ripdf/samling/20222/lovforslag/l19/20222_l19_som_vedtaget.pdf. live.
  5. On Time in Greenland Time in Greenland
  6. On airgreenland.com search flights Ilulissat – Kangerlussuaq
  7. On airgreenland.com search flights Nuuk – Kulusuk and Kulusuk – Tasiilaq
  8. Web site: Time Zone Clarity in Greenland . www.timeanddate.com . en . 2 November 2023.
  9. Web site: Act on the Determination of Time. 29 March 1893. 27 March 2023. 26 March 2023. https://web.archive.org/web/20230326114301/https://www.retsinformation.dk/eli/lta/1893/83. live.
  10. Web site: L 19 Proposal for an Act on Danish Standard Time. Thomas Danielsen. 25 January 2023. 27 March 2023. 27 March 2023. https://web.archive.org/web/20230327001049/https://www.ft.dk/samling/20222/lovforslag/L19/som_fremsat.htm. live.
  11. Web site: Proposal to Danish Standard Act. Thomas Danielsen. 25 January 2023. 27 March 2023. 26 March 2023. https://web.archive.org/web/20230326235546/https://www.ft.dk/ripdf/samling/20222/lovforslag/l19/20222_l19_som_fremsat.pdf. live.
  12. Web site: L 19 Proposal for an Act on Danish Standard Time. Thomas Danielsen. 14 March 2023. 27 March 2023. 27 March 2023. https://web.archive.org/web/20230327001054/https://www.ft.dk/samling/20222/lovforslag/L19/32/afstemninger.htm. live.
  13. Web site: L 19 Proposal for an Act on Danish Standard Time. Thomas Danielsen. 14 March 2023. 27 March 2023. 29 March 2023. https://web.archive.org/web/20230329095154/https://www.ft.dk/samling/20222/lovforslag/l19/20222_l19_som_vedtaget.htm. live.
  14. Web site: Greenland Changes Time Zone . 2022-11-25 . Time and Date AS . 2022-12-18 . 2022-12-18 . https://web.archive.org/web/20221218123624/https://www.timeanddate.com/news/time/greenland-change-timezone.html . live .