Updating current time…
MST
12am
3am
6am
9am
12pm
3pm
6pm
9pm
PST/PDT
UTC−8
1h behind
12am
3am
6am
9am
12pm
3pm
6pm
9pm
Pacific Time is on standard time: PST (UTC−8) until Sun, Mar 14, 2027.
CT
UTC−6
1h ahead
12am
3am
6am
9am
12pm
3pm
6pm
9pm
EST
UTC−5
2h ahead
12am
3am
6am
9am
12pm
3pm
6pm
9pm
GMT/BST
UTC+0
7h ahead
12am
3am
6am
9am
12pm
3pm
6pm
9pm
The United Kingdom is on standard time: GMT (UTC+0) until Sun, Mar 28, 2027.
GMT
UTC+0
7h ahead
12am
3am
6am
9am
12pm
3pm
6pm
9pm

Quick answers

Selected conversion

5:00 am05:00 MST (UTC-7), Nov 8, 2026 = 4:00 am04:00 PST (UTC-8), Nov 8, 2026 = 6:00 am06:00 CT (UTC-6), Nov 8, 2026 = 7:00 am07:00 EST (UTC-5), Nov 8, 2026 = 12:00 pm12:00 GMT (UTC+0), Nov 8, 2026 = 12:00 pm12:00 GMT (UTC+0), Nov 8, 2026

MST is 1 hour ahead of PST. MST is 1 hour behind CT. MST is 2 hours behind EST. MST is 7 hours behind GMT. MST is 7 hours behind GMT.

How the time difference changes

MST to PDT

For most of the year, MDT is 1 hour ahead of PDT. From Nov 1, 2026 to Mar 14, 2027, and from Nov 7, 2027 to Mar 12, 2028, MST is 1 hour ahead of PST. Briefly around clock changes, MDT is 2 hours ahead of PST or MST and PDT have the same time.

For most of the year, working hours of 9:00 am to 6:00 pm in MDT correspond to 8:00 am to 5:00 pm in PDT. At other times of the year, working hours of 9:00 am to 6:00 pm in MST correspond to 8:00 am to 5:00 pm in PST.For most of the year, working hours of 09:00 to 18:00 in MDT correspond to 08:00 to 17:00 in PDT. At other times of the year, working hours of 09:00 to 18:00 in MST correspond to 08:00 to 17:00 in PST.

MST to CT

For most of the year, MDT is 1 hour behind CT. From Nov 1, 2026 to Mar 14, 2027, and from Nov 7, 2027 to Mar 12, 2028, MST is 1 hour behind CT. Briefly around clock changes, MDT and CT have the same time or MST is 2 hours behind CT.

For most of the year, working hours of 9:00 am to 6:00 pm in MDT correspond to 10:00 am to 7:00 pm in CT. At other times of the year, working hours of 9:00 am to 6:00 pm in MST correspond to 10:00 am to 7:00 pm in CT.For most of the year, working hours of 09:00 to 18:00 in MDT correspond to 10:00 to 19:00 in CT. At other times of the year, working hours of 09:00 to 18:00 in MST correspond to 10:00 to 19:00 in CT.

MST to EST

For most of the year, MDT is 2 hours behind EDT. From Nov 1, 2026 to Mar 14, 2027, and from Nov 7, 2027 to Mar 12, 2028, MST is 2 hours behind EST. Briefly around clock changes, MDT is 1 hour behind EST or MST is 3 hours behind EDT.

For most of the year, working hours of 9:00 am to 6:00 pm in MDT correspond to 11:00 am to 8:00 pm in EDT. At other times of the year, working hours of 9:00 am to 6:00 pm in MST correspond to 11:00 am to 8:00 pm in EST.For most of the year, working hours of 09:00 to 18:00 in MDT correspond to 11:00 to 20:00 in EDT. At other times of the year, working hours of 09:00 to 18:00 in MST correspond to 11:00 to 20:00 in EST.

MST to BST

For most of the year, MDT is 7 hours behind BST. From Nov 1, 2026 to Mar 14, 2027, and from Nov 7, 2027 to Mar 12, 2028, MST is 7 hours behind GMT. From Mar 14 to Mar 28, 2027, and from Oct 31 to Nov 7, 2027, MDT is 6 hours behind GMT.

For most of the year, working hours of 9:00 am to 6:00 pm in MDT correspond to 4:00 pm to 1:00 am (next day) in BST. At other times of the year, working hours of 9:00 am to 6:00 pm in MST correspond to 4:00 pm to 1:00 am (next day) in GMT or working hours of 9:00 am to 6:00 pm in MDT correspond to 3:00 pm to 12:00 am (next day) in GMT.For most of the year, working hours of 09:00 to 18:00 in MDT correspond to 16:00 to 01:00 (next day) in BST. At other times of the year, working hours of 09:00 to 18:00 in MST correspond to 16:00 to 01:00 (next day) in GMT or working hours of 09:00 to 18:00 in MDT correspond to 15:00 to 00:00 (next day) in GMT.

MST to GMT

For most of the year, MDT is 6 hours behind GMT. From Nov 1, 2026 to Mar 14, 2027, and from Nov 7, 2027 to Mar 12, 2028, MST is 7 hours behind GMT.

For most of the year, working hours of 9:00 am to 6:00 pm in MDT correspond to 3:00 pm to 12:00 am (next day) in GMT. At other times of the year, working hours of 9:00 am to 6:00 pm in MST correspond to 4:00 pm to 1:00 am (next day) in GMT.For most of the year, working hours of 09:00 to 18:00 in MDT correspond to 15:00 to 00:00 (next day) in GMT. At other times of the year, working hours of 09:00 to 18:00 in MST correspond to 16:00 to 01:00 (next day) in GMT.

Compare MST time with PDT, CT, EST, BST, and GMT time, including current local time, UTC offsets, time difference, daylight saving changes, working hours, and shareable meeting times.

Time Difference

Mountain Standard Time is 1 hour ahead of Pacific Standard Time. Mountain Standard Time is 1 hour behind Central Time. Mountain Standard Time is 2 hours behind Eastern Standard Time. Mountain Standard Time is 7 hours behind Greenwich Mean Time. Mountain Standard Time is 7 hours behind Greenwich Mean Time.
5:00 am05:00 in MST is 4:00 am04:00 in PST and is 6:00 am06:00 in CT and is 7:00 am07:00 in EST and is 12:00 pm12:00 in GMT and is 12:00 pm12:00 in GMT

MST to PST call time
Best time for a conference call or a meeting is between 10am-6pm10:00-18:00 in MST which corresponds to 9am-5pm09:00-17:00 in PST.
MST to CT call time
Best time for a conference call or a meeting is between 9am-5pm09:00-17:00 in MST which corresponds to 10am-6pm10:00-18:00 in CT.
MST to EST call time
Best time for a conference call or a meeting is between 9am-4pm09:00-16:00 in MST which corresponds to 11am-6pm11:00-18:00 in EST.
MST to GMT call time
Best time for a conference call or a meeting is between 9am-11am09:00-11:00 in MST which corresponds to 4pm-6pm16:00-18:00 in GMT.
MST to GMT call time
Best time for a conference call or a meeting is between 9am-11am09:00-11:00 in MST which corresponds to 4pm-6pm16:00-18:00 in GMT.

5:00 am05:00 Mountain Standard Time (MST). Offset UTC -7:00 hours
4:00 am04:00 Pacific Standard Time (PST). Offset UTC -8:00 hours
6:00 am06:00 Central Time (CT). Offset UTC -6:00 hours
7:00 am07:00 Eastern Standard Time (EST). Offset UTC -5:00 hours
12:00 pm12:00 Greenwich Mean Time (GMT). Offset UTC 0:00 hours
12:00 pm12:00 Greenwich Mean Time (GMT). Offset UTC 0:00 hours

5:00 am05:00 MST / 4:00 am04:00 PST / 6:00 am06:00 CT / 7:00 am07:00 EST / 12:00 pm12:00 GMT / 12:00 pm12:00 GMT

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
MSTPSTCTESTGMTGMT
11:00pm previous day1:00am2:00am7:00am7:00am
12:00am2:00am3:00am8:00am8:00am
1:00am3:00am4:00am9:00am9:00am
2:00am4:00am5:00am10:00am10:00am
3:00am5:00am6:00am11:00am11:00am
4:00am6:00am7:00am12:00pm12:00pm
5:00am7:00am8:00am1:00pm1:00pm
6:00am8:00am9:00am2:00pm2:00pm
7:00am9:00am10:00am3:00pm3:00pm
8:00am10:00am11:00am4:00pm4:00pm
9:00am11:00am12:00pm5:00pm5:00pm
10:00am12:00pm1:00pm6:00pm6:00pm
11:00am1:00pm2:00pm7:00pm7:00pm
12:00pm2:00pm3:00pm8:00pm8:00pm
1:00pm3:00pm4:00pm9:00pm9:00pm
2:00pm4:00pm5:00pm10:00pm10:00pm
3:00pm5:00pm6:00pm11:00pm11:00pm
4:00pm6:00pm7:00pm12:00am next day12:00am next day
5:00pm7:00pm8:00pm1:00am next day1:00am next day
6:00pm8:00pm9:00pm2:00am next day2:00am next day
7:00pm9:00pm10:00pm3:00am next day3:00am next day
8:00pm10:00pm11:00pm4:00am next day4:00am next day
9:00pm11:00pm12:00am next day5:00am next day5:00am next day
10:00pm12:00am next day1:00am next day6:00am next day6:00am next day
23:00 previous day01:0002:0007:0007:00
00:0002:0003:0008:0008:00
01:0003:0004:0009:0009:00
02:0004:0005:0010:0010:00
03:0005:0006:0011:0011:00
04:0006:0007:0012:0012:00
05:0007:0008:0013:0013:00
06:0008:0009:0014:0014:00
07:0009:0010:0015:0015:00
08:0010:0011:0016:0016:00
09:0011:0012:0017:0017:00
10:0012:0013:0018:0018:00
11:0013:0014:0019:0019:00
12:0014:0015:0020:0020:00
13:0015:0016:0021:0021:00
14:0016:0017:0022:0022:00
15:0017:0018:0023:0023:00
16:0018:0019:0000:00 next day00:00 next day
17:0019:0020:0001:00 next day01:00 next day
18:0020:0021:0002:00 next day02:00 next day
19:0021:0022:0003:00 next day03:00 next day
20:0022:0023:0004:00 next day04:00 next day
21:0023:0000:00 next day05:00 next day05:00 next day
22:0000:00 next day01:00 next day06:00 next day06:00 next day

Mountain Standard Time

Offset: MST is 7 hours behind Greenwich Mean Time (GMT).

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

Principal Cities: The largest city in the MST time zone is Phoenix in the United States, with about 1.65 million people. Other major cities in this time zone include Ciudad Juárez, Hermosillo, Culiacán, Denver.

French: HNR - Heure Normale des Rocheuses

Spanish: MT - Zona Pacífico

Map of the areas on Mountain Standard Time (MST)
MST all year MST part of the year

Today all shaded areas are on MST.

Daylight Saving: This is a standard time zone. During summer, some places set clocks forward one hour for daylight saving time and observe Mountain Daylight Time (MDT).

123456789101112Start: Mountain Standard Time (MST) started on Sunday, November 1, 2026 at 2:00 am02:00 local time and clocks were set one hour back to Sunday, November 1, 2026, 1:00 am01:00. Standard time starts annually on the first Sunday of November.

123456789101112End: Mountain Standard Time (MST) ends on Sunday, March 14, 2027 at 2:00 am02:00 local time and clocks are set one hour forward to Sunday, March 14, 2027, 3:00 am03:00 local daylight time instead. Standard time ends annually on the second Sunday of March.

See USA daylight saving time and upcoming clock changes worldwide.

MST 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 MST
  • T - short form of 'Tango'
IANA/Olson: Reflects MST 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/Creston
  • America/Dawson
  • America/Dawson_Creek
  • America/Denver
  • America/Edmonton
  • America/Fort_Nelson
  • America/Hermosillo
  • America/Inuvik
  • America/Mazatlan
  • America/Phoenix
  • America/Shiprock
  • America/Whitehorse
  • America/Yellowknife
  • Canada/Mountain
  • Canada/Yukon
  • MST
  • MST7MDT
  • Mexico/BajaSur
  • Navajo
  • US/Arizona
  • US/Mountain
Time zones with the GMT -7 offset:
  • MST - Mountain Standard Time
  • PDT - Pacific Daylight Time
  • YST - Yukon Standard Time
  • T - Tango Time Zone

Pacific Daylight Time

Offset: PDT is 7 hours behind Greenwich Mean Time (GMT).

Countries using this time zone: Mexico, United States

Principal Cities: The largest city in the PDT time zone is Los Angeles in the United States, with about 3.821 million people. Other major cities in this time zone include Tijuana, San Diego, Mexicali, San Jose.

French: HAP - Heure Avancée du Pacifique

Spanish: PT - Zona Noroeste

Map of the areas on Pacific Daylight Time (PDT)
PDT part of the year

Today the shaded areas are on UTC−8 (Pacific Standard Time).

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

123456789101112End: Pacific Daylight Time (PDT) ended on Sunday, November 1, 2026 at 2:00 am02:00 local time and clocks were set one hour back to Sunday, November 1, 2026, 1:00 am01:00 local standard time instead. Daylight saving ends annually on the first Sunday of November.

123456789101112Start: Pacific Daylight Time (PDT) starts on Sunday, March 14, 2027 at 2:00 am02:00 local time and clocks are set one hour forward to Sunday, March 14, 2027, 3:00 am03:00. Daylight saving starts annually on the second Sunday of March.

See USA daylight saving time and upcoming clock changes worldwide.

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

Central Time

Central Time (CT) is a general term used to describe the areas that observe either the Central Standard Time (CST) or Central Daylight Time (CDT) in the United States and Canada. CT is not static but switches between CDT and CST.

Territories observing the time zone are primarily in North and Central America. It runs through several Mexican and U.S. states, as well as several Canadian provinces and Central American countries.

Countries using this time zone: Belize, Canada, Costa Rica, El Salvador, Guatemala, Honduras, Mexico, Nicaragua, United States

Principal Cities: The largest city in the CT time zone is Mexico City in Mexico, with about 12.294 million people. Other major cities in this time zone include Chicago, Houston, Puebla, Santiago de Querétaro.

French: HNC - Heure Normale du Centre

Spanish: CT - Tiempo Central Estándar, CT - Zona Centro

Map of the areas on Central Time (CT)
CT all year CT part of the year

Today all shaded areas are on CT.

CT 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 CT
  • S - short form of 'Sierra'
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

Eastern Standard Time

Offset: EST is 5 hours behind Greenwich Mean Time (GMT).

Countries using this time zone: Bahamas, Canada, Cayman Islands, Haiti, Jamaica, Mexico, Panama, Turks and Caicos Islands, United States

Principal Cities: The largest city in the EST time zone is New York City in the United States, with about 8.804 million people. Other major cities in this time zone include Toronto, Montréal, Philadelphia, Port-au-Prince.

French: HNE - Heure Normale de l'Est

Spanish: ET - Tiempo del Este, ET - Zona Sureste

Map of the areas on Eastern Standard Time (EST)
EST all year EST part of the year

Today all shaded areas are on EST.

Daylight Saving: This is a standard time zone. During summer, some places set clocks forward one hour for daylight saving time and observe Eastern Daylight Time (EDT).

123456789101112Start: Eastern Standard Time (EST) started on Sunday, November 1, 2026 at 2:00 am02:00 local time and clocks were set one hour back to Sunday, November 1, 2026, 1:00 am01:00. Standard time starts annually on the first Sunday of November.

123456789101112End: Eastern Standard Time (EST) ends on Sunday, March 14, 2027 at 2:00 am02:00 local time and clocks are set one hour forward to Sunday, March 14, 2027, 3:00 am03:00 local daylight time instead. Standard time ends annually on the second Sunday of March.

See USA daylight saving time and upcoming clock changes worldwide.

EST 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 EST
  • R - short form of 'Romeo'
IANA/Olson: Reflects EST time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
  • America/Atikokan
  • America/Cancun
  • America/Cayman
  • America/Coral_Harbour
  • 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/Jamaica
  • America/Kentucky/Louisville
  • America/Kentucky/Monticello
  • America/Louisville
  • America/Montreal
  • America/Nassau
  • America/New_York
  • America/Nipigon
  • America/Panama
  • America/Pangnirtung
  • America/Port-au-Prince
  • America/Thunder_Bay
  • America/Toronto
  • Canada/Eastern
  • EST
  • EST5EDT
  • Jamaica
  • US/East-Indiana
  • US/Eastern
  • US/Michigan
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

British Summer Time

Offset: BST is 1 hour ahead of Greenwich Mean Time (GMT).

Countries using this time zone: Guernsey, Isle of Man, Jersey, United Kingdom

Principal Cities: The largest city in the BST time zone is London in the United Kingdom, with about 8.962 million people. Other major cities in this time zone include Birmingham, Glasgow, Manchester, Sheffield.

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.

Current time in the United Kingdom: UK time now

Map of the areas on British Summer Time (BST)
BST part of the year

Today the shaded areas are on UTC+0 (GMT).

BST representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • +01 - basic short
  • +0100 - basic
  • +01:00 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • +0100 - sign character (+) followed by a four digit time providing hours (01) and minutes (00) of the offset. Indicates an offset of one hour to the east of the zero meridian.
Military/NATO: Used by the U.S. military, Chinese military and others
  • Alpha - Military abbreviation for BST
  • A - short form of 'Alpha'
IANA/Olson: Reflects BST time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
  • Europe/Belfast
  • Europe/Guernsey
  • Europe/Isle_of_Man
  • Europe/Jersey
  • Europe/London
  • GB
  • GB-Eire
BST Abbreviation: Several time zones share BST abbreviation and it could refer to these time zones
  • British Summer Time - UTC +1
  • Bangladesh Standard Time - UTC +6
  • Bougainville Standard Time - UTC +11
Time zones with the GMT +1 offset:
  • BST - British Summer Time
  • CET - Central European Time
  • IST - Irish Standard Time
  • WEST - Western European Summer Time
  • A - Alpha Time Zone
  • CET - Central European Time
  • MEZ - Mitteleuropäische Zeit
  • WAT - West Africa Time
  • WST - Western Sahara Summer Time
  • BMT - Biel Mean Time

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 all shaded areas are on GMT.

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