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The United Kingdom is on summer time: BST (UTC+1) until Sun, Oct 25.

Iceland and Ghana stay on GMT (UTC+0).

GreenlandWGST
UTC−1
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Sisimiut's clocks go back 1 hour on Sun, Oct 25 · WGST → WGT

Quick answers

Selected conversion

12:00 pm12:00 GMT (UTC+0), Oct 17, 2026 = 11:00 am11:00 WGST (UTC-1), Oct 17, 2026

GMT is 1 hour ahead of Sisimiut.

How the time difference changes

For most of the year, GMT is 1 hour ahead of Sisimiut. From Oct 25, 2026 to Mar 28, 2027, GMT is 2 hours ahead of Sisimiut.

For most of the year, working hours of 9:00 am to 6:00 pm in GMT correspond to 8:00 am to 5:00 pm in Sisimiut. At other times of the year, working hours of 9:00 am to 6:00 pm in GMT correspond to 7:00 am to 4:00 pm in Sisimiut.For most of the year, working hours of 09:00 to 18:00 in GMT correspond to 08:00 to 17:00 in Sisimiut. At other times of the year, working hours of 09:00 to 18:00 in GMT correspond to 07:00 to 16:00 in Sisimiut.

Compare GMT time with Sisimiut time, including current local time, UTC offsets, time difference, daylight saving changes, working hours, and shareable meeting times.

Time Difference

Greenwich Mean Time is 1 hour ahead of WGST (Western Greenland Summer Time).
12:00 pm12:00 in GMT is 11:00 am11:00 in Sisimiut, Greenland

GMT to Sisimiut call time
Best time for a conference call or a meeting is between 10am-6pm10:00-18:00 in GMT which corresponds to 9am-5pm09:00-17:00 in Sisimiut

12:00 pm12:00 Greenwich Mean Time (GMT). Offset UTC 0:00 hours
11:00 am11:00 WGST (Western Greenland Summer Time) (Sisimiut, Greenland). Offset UTC -1:00 hours

12:00 pm12:00 GMT / 11:00 am11:00 Sisimiut, Greenland

Choose an hour to update the converter. Day labels such as “next day” or “+1” are relative to the selected date in the first column. Use Up and Down arrow keys, Home or End to move between hours, then Enter or Space to select.

Hourly time comparison
GMTSisimiut, Greenland
11:00pm previous day
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23:00 previous day
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Greenwich Mean Time

Offset: GMT is the same as Greenwich Mean Time (GMT).

Countries using this time zone: Antarctica, Burkina Faso, Gambia, Ghana, Greenland, Guernsey, Guinea, Guinea-Bissau, Iceland, Ireland, Isle of Man, Ivory Coast, Jersey, Liberia, Mali, Mauritania, Morocco, Saint Helena, São Tomé and Príncipe, Senegal, Sierra Leone, Togo, United Kingdom, Western Sahara

Principal Cities: The largest city in the GMT time zone is London in the United Kingdom, with about 8.962 million people. Other major cities in this time zone include Abidjan, Bamako, Casablanca, Dakar.

Greenwich Mean Time (GMT) originally referred to the mean solar time at the Royal Observatory in Greenwich, London. It is now often used to refer to Coordinated Universal Time (UTC) when this is viewed as a time zone, and in casual use the two are the same. In the military, GMT is known as Zulu time. Greenwich Mean Time was the same as Universal Time (UT), a standard astronomical concept used in many technical fields, until the introduction of UTC in 1972.

Map of the areas on Greenwich Mean Time (GMT)
GMT all year GMT part of the year

Today the lighter areas are on UTC+1 (British Summer Time, Irish Standard Time).

GMT representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • Z - is the zone designator for the zero UTC/GMT offset, also known as 'Zulu' time
  • +00 - basic short
  • +0000 - basic
  • +00:00 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • +0000 - sign character (+) followed by a four digit time providing hours (00) and minutes (00) of the offset. Indicates the zero UTC/GMT offset.
Military/NATO: Used by the U.S. military, Chinese military and others
  • Zulu - Military abbreviation for GMT
  • Z - short form of 'Zulu'
IANA/Olson: Reflects GMT time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
  • Africa/Abidjan
  • Africa/Accra
  • Africa/Bamako
  • Africa/Banjul
  • Africa/Bissau
  • Africa/Conakry
  • Africa/Dakar
  • Africa/Freetown
  • Africa/Lome
  • Africa/Monrovia
  • Africa/Nouakchott
  • Africa/Ouagadougou
  • Africa/Sao_Tome
  • Africa/Timbuktu
  • America/Danmarkshavn
  • Atlantic/Reykjavik
  • Atlantic/St_Helena
  • Eire
  • Etc/GMT
  • Etc/GMT+0
  • Etc/GMT-0
  • Etc/GMT0
  • Etc/Greenwich
  • Europe/Belfast
  • Europe/Dublin
  • Europe/Guernsey
  • Europe/Isle_of_Man
  • Europe/Jersey
  • Europe/London
  • GB
  • GB-Eire
  • GMT
  • GMT+0
  • GMT-0
  • GMT0
  • Greenwich
  • Iceland
Time zones with the GMT +0 offset:
  • EGST - Eastern Greenland Summer Time
  • GMT - Greenwich Mean Time
  • WET - Western European Time
  • AZOST - Azores Summer Time
  • UTC - Coordinated Universal Time
  • WT - Western Sahara Standard Time
  • Z - Zulu Time Zone

Sisimiut Time Zone and Facts

Time Zone

Abbreviation / Offset
WGST – Western Greenland Summer Time, UTC-1 (now, daylight saving time)
WGT – West Greenland Time, UTC-2 (standard time)
Daylight Saving Time Ends
123456789101112Sunday, October 25, 2026 at 12:00 amSunday, October 25, 2026 at 00:00: clocks go back 1 hour to Saturday, October 24, 2026 at 11:00 pmSaturday, October 24, 2026 at 23:00 (WGT). DST ends on the last Sunday of October each year. Also called Fall Back or Winter Time.
Daylight Saving Time Starts
123456789101112Saturday, March 27, 2027 at 11:00 pmSaturday, March 27, 2027 at 23:00: clocks go forward 1 hour to Sunday, March 28, 2027 at 12:00 amSunday, March 28, 2027 at 00:00 (WGST). Also called Spring Forward or Summer Time.

Sisimiut Facts

Country
Greenland
Population
5,227
Currency
Krone (DKK)
Geographic Coordinates
66° 56' N Latitude / 53° 40' W Longitude
International Dialing Code
+299