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Dominican RepublicAST
UTC−4
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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).

Quick answers

Selected conversion

8:00 am08:00 AST (UTC-4), Oct 13, 2026 = 12:00 pm12:00 GMT (UTC+0), Oct 13, 2026

Santo Domingo is 4 hours behind GMT.

How the time difference changes

Santo Domingo is 4 hours behind GMT year-round.

Working hours of 9:00 am to 5:00 pm in Santo Domingo correspond to 1:00 pm to 9:00 pm in GMT.Working hours of 09:00 to 17:00 in Santo Domingo correspond to 13:00 to 21:00 in GMT.

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

Time Difference

AST (Atlantic Standard Time) is 4 hours behind Greenwich Mean Time.
8:00 am08:00 in Santo Domingo, Dominican Republic is 12:00 pm12:00 in GMT

Santo Domingo to GMT call time
Best time for a conference call or a meeting is between 9am-1pm09:00-13:00 in Santo Domingo which corresponds to 1pm-5pm13:00-17:00 in GMT

8:00 am08:00 AST (Atlantic Standard Time) (Santo Domingo, Dominican Republic). Offset UTC -4:00 hours
12:00 pm12:00 Greenwich Mean Time (GMT). Offset UTC 0:00 hours

8:00 am08:00 Santo Domingo, Dominican Republic / 12:00 pm12:00 GMT

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Hourly time comparison
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Santo Domingo Time Zone and Facts

Time Zone

Abbreviation / Offset
AST – Atlantic Standard Time, UTC-4 (no daylight saving time)

Santo Domingo Facts

Country
Dominican Republic
Alternative Names
Ciudad Trujillo, SDQ, Saint Domingue, Santo Domingo, Santo Domingo City, Santo Domingo de Guzman, Santo Domingo de Guzmán, Santo Ntomin'nko, Santo-Domingo, santodoming-go, Σάντο Ντομίνγκο, Санто-Доминго, 산토도밍고
Population
2,201,941
Currency
Peso (DOP)
Geographic Coordinates
18° 28' N Latitude / 69° 53' W Longitude

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