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South Dakota, USAMDT
UTC−6
12am
3am
6am
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12pm
3pm
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9pm
GMT
UTC+0
6h ahead
12am
3am
6am
9am
12pm
3pm
6pm
9pm
The United Kingdom is on summer time: BST (UTC+1) until Sun, Oct 25.

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

Quick answers

Selected conversion

6:00 am06:00 MDT (UTC-6), Oct 15, 2026 = 12:00 pm12:00 GMT (UTC+0), Oct 15, 2026

Ellsworth Air Force Base is 6 hours behind GMT.

How the time difference changes

For most of the year, Ellsworth Air Force Base is 6 hours behind GMT. From Nov 1, 2026 to Mar 14, 2027, Ellsworth Air Force Base is 7 hours behind GMT.

For most of the year, working hours of 9:00 am to 5:00 pm in Ellsworth Air Force Base correspond to 3:00 pm to 11:00 pm in GMT. At other times of the year, working hours of 9:00 am to 5:00 pm in Ellsworth Air Force Base correspond to 4:00 pm to 12:00 am (next day) in GMT.For most of the year, working hours of 09:00 to 17:00 in Ellsworth Air Force Base correspond to 15:00 to 23:00 in GMT. At other times of the year, working hours of 09:00 to 17:00 in Ellsworth Air Force Base correspond to 16:00 to 00:00 (next day) in GMT.

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

Time Difference

MDT (Mountain Daylight Time) is 6 hours behind Greenwich Mean Time.
6:00 am06:00 in Ellsworth Air Force Base, SD, USA is 12:00 pm12:00 in GMT

Ellsworth Air Force Base to GMT call time
Best time for a conference call or a meeting is between 9am-11am09:00-11:00 in Ellsworth Air Force Base which corresponds to 3pm-5pm15:00-17:00 in GMT

6:00 am06:00 MDT (Mountain Daylight Time) (Ellsworth Air Force Base, SD, USA). Offset UTC -6:00 hours
12:00 pm12:00 Greenwich Mean Time (GMT). Offset UTC 0:00 hours

6:00 am06:00 Ellsworth Air Force Base, SD, USA / 12:00 pm12:00 GMT

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Hourly time comparison
Ellsworth Air Force Base, SD, USAGMT
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Ellsworth Air Force Base Time Zone and Facts

Time Zone

Abbreviation / Offset
MDT – Mountain Daylight Time, UTC-6 (now, daylight saving time)
MST – Mountain Standard Time, UTC-7 (standard time)
Daylight Saving Time Ends
123456789101112Sunday, November 1, 2026 at 2:00 amSunday, November 1, 2026 at 02:00: clocks go back 1 hour to 1:00 am01:00 (MST). DST ends on the 1st Sunday of November each year. Also called Fall Back or Winter Time.
Daylight Saving Time Starts
123456789101112Sunday, March 14, 2027 at 2:00 amSunday, March 14, 2027 at 02:00: clocks go forward 1 hour to 3:00 am03:00 (MDT). DST starts on the 2nd Sunday of March each year. Also called Spring Forward or Summer Time.

Ellsworth Air Force Base Facts

Country
USA
State
South Dakota
Population
8,000
Currency
Dollar (USD)
Geographic Coordinates
44° 08' N Latitude / 103° 04' W Longitude
International Dialing Code
+1
More About Ellsworth Air Force Base

Greenwich Mean Time

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

Countries using this time zone: Burkina Faso, Côte d'Ivoire, Britain (UK), Guernsey, Ghana, Greenland, Gambia, Guinea, Guinea-Bissau, Ireland, Isle of Man, Iceland, Jersey, Liberia, Mali, Mauritania, St Helena, Sierra Leone, Senegal, Sao Tome & Principe, Togo

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, Dakar, Kumasi.

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