GMT
Greenwich Mean Time
GMT +0
Mon, Aug 21
12am
3am
6am
9am
12pm
3pm
6pm
9pm
EDT
Eastern Daylight Time
GMT -4
Mon, Aug 21
12am
3am
6am
9am
12pm
3pm
6pm
9pm
CDT
Central Daylight Time
GMT -5
Mon, Aug 21
12am
3am
6am
9am
12pm
3pm
6pm
9pm
MDT
Mountain Daylight Time
GMT -6
Mon, Aug 21
12am
3am
6am
9am
12pm
3pm
6pm
9pm
PDT
Pacific Daylight Time
GMT -7
Mon, Aug 21
12am
3am
6am
9am
12pm
3pm
6pm
9pm

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

Time Difference

Greenwich Mean Time is 4 hours ahead of Eastern Daylight Time and 5 hours ahead of Central Daylight Time and 6 hours ahead of Mountain Daylight Time and 7 hours ahead of Pacific Daylight Time
5:00 pm17:00 in GMT is 1:00 pm13:00 in EDT and is 12:00 pm12:00 in CDT and is 11:00 am11:00 in MDT and is 10:00 am10:00 in PDT

GMT to EDT call time
Best time for a conference call or a meeting is between 1pm-5pm in GMT which corresponds to 9am-1pm in EDT
GMT to CDT call time
Best time for a conference call or a meeting is between 2pm-5pm in GMT which corresponds to 9am-12pm in CDT
GMT to MDT call time
Best time for a conference call or a meeting is between 3pm-5pm in GMT which corresponds to 9am-11am in MDT
GMT to PDT call time
Best time for a conference call or a meeting is between 4pm-5pm in GMT which corresponds to 9am-10am in PDT

5:00 pm17:00 Greenwich Mean Time (GMT). Offset UTC 0:00 hours
1:00 pm13:00 Eastern Daylight Time (EDT). Offset UTC -4:00 hours
12:00 pm12:00 Central Daylight Time (CDT). Offset UTC -5:00 hours
11:00 am11:00 Mountain Daylight Time (MDT). Offset UTC -6:00 hours
10:00 am10:00 Pacific Daylight Time (PDT). Offset UTC -7:00 hours

5:00 pm17:00 GMT / 1:00 pm13:00 EDT / 12:00 pm12:00 CDT / 11:00 am11:00 MDT / 10:00 am10:00 PDT

GMTEDTCDTMDTPDT
12am (midnight)8pm7pm6pm5pm
1am9pm8pm7pm6pm
2am10pm9pm8pm7pm
3am11pm10pm9pm8pm
4am12am (midnight)11pm10pm9pm
5am1am12am (midnight)11pm10pm
6am2am1am12am (midnight)11pm
7am3am2am1am12am (midnight)
8am4am3am2am1am
9am5am4am3am2am
10am6am5am4am3am
11am7am6am5am4am
12pm (noon)8am7am6am5am
1pm9am8am7am6am
2pm10am9am8am7am
3pm11am10am9am8am
4pm12pm (noon)11am10am9am
5pm1pm12pm (noon)11am10am
6pm2pm1pm12pm (noon)11am
7pm3pm2pm1pm12pm (noon)
8pm4pm3pm2pm1pm
9pm5pm4pm3pm2pm
10pm6pm5pm4pm3pm
11pm7pm6pm5pm4pm
00:0020:0019:0018:0017:00
01:0021:0020:0019:0018:00
02:0022:0021:0020:0019:00
03:0023:0022:0021:0020:00
04:0000:0023:0022:0021:00
05:0001:0000:0023:0022:00
06:0002:0001:0000:0023:00
07:0003:0002:0001:0000:00
08:0004:0003:0002:0001:00
09:0005:0004:0003:0002:00
10:0006:0005:0004:0003:00
11:0007:0006:0005:0004:00
12:0008:0007:0006:0005:00
13:0009:0008:0007:0006:00
14:0010:0009:0008:0007:00
15:0011:0010:0009:0008:00
16:0012:0011:0010:0009:00
17:0013:0012:0011:0010:00
18:0014:0013:0012:0011:00
19:0015:0014:0013:0012:00
20:0016:0015:0014:0013:00
21:0017:0016:0015:0014:00
22:0018:0017:0016:0015:00
23:0019:0018:0017:0016:00

Greenwich Mean Time

Offset: GMT is 0 hours ahead Greenwich Mean Time (GMT) and is used in Europe

Countries using this time zone: Burkina Faso, Côte d'Ivoire, Ghana, Greenland, Gambia, Guinea, Guinea-Bissau, Iceland, Liberia, Mali, Mauritania, St Helena, Sierra Leone, Senegal, Sao Tome & Principe, Togo

Principal Cities: The largest city in the GMT time zone is Abidjan in Ivory Coast, with about 3.677 million people. Other major cities in this time zone include Dakar, Grand Dakar, Accra, Camayenne.

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 for the most parts it is the same. In military GMT is known as Zulu time.Greenwich Mean Time was the same as Universal Time (UT), until the introduction of UTC in 1972 a standard astronomical concept used in many technical fields.

GMT Time Zone Geo Map
GMT timezone map

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 - Universal Time Coordinated
  • WT - Western Sahara Standard Time
  • Z - Zulu Time Zone

Eastern Daylight Time

Offset: EDT is 4 hours behind Greenwich Mean Time (GMT) and is used in North America

Countries using this time zone: Bahamas, Canada, Haiti, Turks & Caicos Is, United States

Principal Cities: The largest city in the EDT time zone is New York City in the United States, with about 8.175 million people. Other major cities in this time zone include Toronto, Montreal, Brooklyn, Borough of Queens.

French: HAE - Heure Avancée de l'Est

Spanish: EDT - Tiempo de verano del Este, ET - Zona Sureste

EDT Time Zone Geo Map
EDT timezone map

Daylight Saving: Eastern Daylight Time (EDT) is a daylight saving/summer time zone. During winter, some places set clocks back one hour and observe Eastern Standard Time (EST).

Daylight saving time clock moves forward for one hour from 2am to 3amStart: Eastern Daylight Time (EDT) started on Sunday, March 12, 2017 at 2:00 am local time and clocks were set one hour forward to Sunday, March 12, 2017, 3:00 am. Daylight saving starts annually on the second Sunday of March

Daylight saving time clock moves back for one hour from 2am to 1amEnd: Eastern Daylight Time (EDT) ends on Sunday, November 5, 2017 at 2:00 am local time and clocks are set one hour back to Sunday, November 5, 2017, 1:00 am local standard time instead. Daylight saving ends annually on the first Sunday of November

EDT representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • -04 - basic short
  • -0400 - basic
  • -04:00 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • -0400 - sign character (-) followed by a four digit time providing hours (04) and minutes (00) of the offset. Indicates an offset of four hours to the west of the zero meridian.
Military/NATO: Used by the U.S. military, Chinese military and others
  • Quebec - Military abbreviation for EDT
  • Q - short form of 'Quebec'
IANA/Olson: Reflects EDT time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
  • America/Detroit
  • America/Fort_Wayne
  • America/Grand_Turk
  • America/Indiana/Indianapolis
  • America/Indiana/Marengo
  • America/Indiana/Petersburg
  • America/Indiana/Vevay
  • America/Indiana/Vincennes
  • America/Indiana/Winamac
  • America/Indianapolis
  • America/Iqaluit
  • America/Kentucky/Louisville
  • America/Kentucky/Monticello
  • America/Louisville
  • America/Montreal
  • America/Nassau
  • America/New_York
  • America/Nipigon
  • America/Pangnirtung
  • America/Port-au-Prince
  • America/Thunder_Bay
  • America/Toronto
  • Canada/Eastern
  • EST5EDT
  • US/East-Indiana
  • US/Eastern
  • US/Michigan
Time zones with the GMT -4 offset:
  • AST - Atlantic Standard Time
  • EDT - Eastern Daylight Time
  • AMT - Amazon Time
  • BOT - Bolivia Time
  • CDT - Cuba Daylight Time
  • CLT - Chile Standard Time
  • FKT - Falkland Island Time
  • GYT - Guyana Time
  • HLV - Hora Legal de Venezuela
  • PYT - Paraguay Time
  • Q - Quebec Time Zone
  • VET - Venezuelan Standard Time

Central Daylight Time

Offset: CDT is 5 hours behind Greenwich Mean Time (GMT) and is used in North America

Countries using this time zone: Canada, Mexico, United States

Principal Cities: The largest city in the CDT time zone is Chicago in the United States, with about 2.696 million people. Other major cities in this time zone include Houston, Ciudad Juarez, San Antonio, Dallas.

French: HAC - Heure Avancée du Centre

Spanish: CT - Zona Centro

CDT Time Zone Geo Map
CDT timezone map

Daylight Saving: Central Daylight Time (CDT) is a daylight saving/summer time zone. During winter, some places set clocks back one hour and observe Central Standard Time (CST).

Daylight saving time clock moves forward for one hour from 2am to 3amStart: Central Daylight Time (CDT) started on Sunday, March 12, 2017 at 2:00 am local time and clocks were set one hour forward to Sunday, March 12, 2017, 3:00 am. Daylight saving starts annually on the second Sunday of March

Daylight saving time clock moves back for one hour from 2am to 1amEnd: Central Daylight Time (CDT) ends on Sunday, November 5, 2017 at 2:00 am local time and clocks are set one hour back to Sunday, November 5, 2017, 1:00 am local standard time instead. Daylight saving ends annually on the first Sunday of November

CDT representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • -05 - basic short
  • -0500 - basic
  • -05:00 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • -0500 - sign character (-) followed by a four digit time providing hours (05) and minutes (00) of the offset. Indicates an offset of five hours to the west of the zero meridian.
Military/NATO: Used by the U.S. military, Chinese military and others
  • Romeo - Military abbreviation for CDT
  • R - short form of 'Romeo'
IANA/Olson: Reflects CDT time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
  • America/Chicago
  • America/Indiana/Knox
  • America/Indiana/Tell_City
  • America/Knox_IN
  • America/Matamoros
  • America/Menominee
  • America/North_Dakota/Beulah
  • America/North_Dakota/Center
  • America/North_Dakota/New_Salem
  • America/Ojinaga
  • America/Rainy_River
  • America/Rankin_Inlet
  • America/Resolute
  • America/Winnipeg
  • CST6CDT
  • Canada/Central
  • US/Central
  • US/Indiana-Starke
CDT Abbreviation: Several time zones share CDT abbreviation and it could refer to these time zones
  • Central Daylight Time - UTC -5
  • Cuba Daylight Time - UTC -4
Time zones with the GMT -5 offset:
  • CDT - Central Daylight Time
  • EST - Eastern Standard Time
  • ET - Eastern Time
  • COT - Colombia Time
  • CST - Cuba Standard Time
  • EASST - Easter Island Summer Time
  • ECT - Ecuador Time
  • PET - Peru Time
  • R - Romeo Time Zone

Mountain Daylight Time

Offset: MDT is 6 hours behind Greenwich Mean Time (GMT) and is used in North America

Countries using this time zone: Canada, Mexico, United States

Principal Cities: The largest city in the MDT time zone is Calgary in Canada, with about 1.02 million people. Other major cities in this time zone include Edmonton, El Paso, Denver, Albuquerque.

French: HAR - Heure Avancée des Rocheuses

Spanish: MT - Zona Pacífico

MDT Time Zone Geo Map
MDT timezone map

Daylight Saving: Mountain Daylight Time (MDT) is a daylight saving/summer time zone. During winter, some places set clocks back one hour and observe Mountain Standard Time (MST).

Daylight saving time clock moves forward for one hour from 2am to 3amStart: Mountain Daylight Time (MDT) started on Sunday, March 12, 2017 at 2:00 am local time and clocks were set one hour forward to Sunday, March 12, 2017, 3:00 am. Daylight saving starts annually on the second Sunday of March

Daylight saving time clock moves back for one hour from 2am to 1amEnd: Mountain Daylight Time (MDT) ends on Sunday, November 5, 2017 at 2:00 am local time and clocks are set one hour back to Sunday, November 5, 2017, 1:00 am local standard time instead. Daylight saving ends annually on the first Sunday of November

MDT representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • -06 - basic short
  • -0600 - basic
  • -06:00 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • -0600 - sign character (-) followed by a four digit time providing hours (06) and minutes (00) of the offset. Indicates an offset of six hours to the west of the zero meridian.
Military/NATO: Used by the U.S. military, Chinese military and others
  • Sierra - Military abbreviation for MDT
  • S - short form of 'Sierra'
IANA/Olson: Reflects MDT time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
  • America/Boise
  • America/Cambridge_Bay
  • America/Ciudad_Juarez
  • America/Denver
  • America/Edmonton
  • America/Inuvik
  • America/Shiprock
  • America/Yellowknife
  • Canada/Mountain
  • MST7MDT
  • Navajo
  • US/Mountain
Time zones with the GMT -6 offset:
  • CST - Central Standard Time
  • CT - Central Time
  • MDT - Mountain Daylight Time
  • EAST - Easter Island Standard Time
  • GALT - Galapagos Time
  • S - Sierra Time Zone

Pacific Daylight Time

Offset: PDT is 7 hours behind Greenwich Mean Time (GMT) and is used in North America

Countries using this time zone: Canada, Mexico, United States

Principal Cities: The largest city in the PDT time zone is Los Angeles in the United States, with about 3.793 million people. Other major cities in this time zone include Vancouver, Tijuana, San Diego, San Jose.

French: HAP - Heure Avancée du Pacifique

Spanish: PT - Zona Noroeste

PDT Time Zone Geo Map
PDT timezone map

Daylight Saving: Pacific Daylight Time (PDT) is a daylight saving/summer time zone. During winter, some places set clocks back one hour and observe Pacific Standard Time (PST).

Daylight saving time clock moves forward for one hour from 2am to 3amStart: Pacific Daylight Time (PDT) started on Sunday, March 12, 2017 at 2:00 am local time and clocks were set one hour forward to Sunday, March 12, 2017, 3:00 am. Daylight saving starts annually on the second Sunday of March

Daylight saving time clock moves back for one hour from 2am to 1amEnd: Pacific Daylight Time (PDT) ends on Sunday, November 5, 2017 at 2:00 am local time and clocks are set one hour back to Sunday, November 5, 2017, 1:00 am local standard time instead. Daylight saving ends annually on the first Sunday of November

PDT representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • -07 - basic short
  • -0700 - basic
  • -07:00 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • -0700 - sign character (-) followed by a four digit time providing hours (07) and minutes (00) of the offset. Indicates an offset of seven hours to the west of the zero meridian.
Military/NATO: Used by the U.S. military, Chinese military and others
  • Tango - Military abbreviation for PDT
  • T - short form of 'Tango'
IANA/Olson: Reflects PDT time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
  • America/Ensenada
  • America/Los_Angeles
  • America/Santa_Isabel
  • America/Tijuana
  • America/Vancouver
  • Canada/Pacific
  • Mexico/BajaNorte
  • PST8PDT
  • US/Pacific
Time zones with the GMT -7 offset:
  • MST - Mountain Standard Time
  • PDT - Pacific Daylight Time
  • YST - Yukon Standard Time
  • T - Tango Time Zone