GMT to EST to IST to AEST to SST to JST to MDT to PST to CST to UTC to BST
AEST is NOT in use by many locations
AEDT (Australian Eastern Daylight Time) is used instead. Switch to AEDT time zone or select one of the cities Sydney, Melbourne, Gold Coast) for automatic timezone change.Time Difference
Greenwich Mean Time is 4 hours ahead of Eastern Daylight Time and 5 hours and 30 minutes behind India Standard Time and 10 hours behind Australian Eastern Standard Time and 11 hours ahead of Samoa Standard Time and 9 hours behind Japan Standard Time and 6 hours ahead of Mountain Daylight Time and 7 hours ahead of Pacific Daylight Time and 5 hours ahead of Central Daylight Time and 0 hours ahead of Universal Time Coordinated and 1 hours behind British Summer Time
9:00 am09:00 in GMT is 5:00 am05:00 in EDT and is 2:30 pm14:30 in IST and is 7:00 pm19:00 in AEST and is 10:00 pm22:00 in SST and is 6:00 pm18:00 in JST and is 3:00 am03:00 in MDT and is 2:00 am02:00 in PDT and is 4:00 am04:00 in CDT and is 9:00 am09:00 in UTC and is 10:00 am10:00 in BST
GMT to EST call time
Best time for a conference call or a meeting is between 1pm-6pm in GMT which corresponds to 8am-1pm in EST
GMT to IST call time
Best time for a conference call or a meeting is between 8am-12:30pm in GMT which corresponds to 1:30pm-6pm in IST
GMT to AEST call time
Best time for a conference call or a meeting is between 8am-10am in GMT which corresponds to 6pm-8pm in AEST
GMT to SST call time
Best time for a conference call or a meeting is between 6:30pm-8:30pm in GMT which corresponds to 7:30am-9:30am in SST
GMT to JST call time
Best time for a conference call or a meeting is between 8am-10am in GMT which corresponds to 5pm-7pm in JST
GMT to MDT call time
Best time for a conference call or a meeting is between 2pm-6pm in GMT which corresponds to 8am-12pm in MDT
GMT to PST call time
Best time for a conference call or a meeting is between 4pm-6pm in GMT which corresponds to 8am-10am in PST
GMT to CST call time
Best time for a conference call or a meeting is between 2pm-6pm in GMT which corresponds to 8am-12pm in CST
GMT to UTC call time
Best time for a conference call or a meeting is between 8am-6pm in GMT which corresponds to 8am-6pm in UTC
GMT to BST call time
Best time for a conference call or a meeting is between 8am-5pm in GMT which corresponds to 9am-6pm in BST
9:00 am09:00 Greenwich Mean Time (GMT). Offset UTC 0:00 hours
5:00 am05:00 Eastern Daylight Time (EDT). Offset UTC -4:00 hours
2:30 pm14:30 India Standard Time (IST). Offset UTC +5:30 hours
7:00 pm19:00 Australian Eastern Standard Time (AEST). Offset UTC +10:00 hours
10:00 pm22:00 Samoa Standard Time (SST). Offset UTC -11:00 hours
6:00 pm18:00 Japan Standard Time (JST). Offset UTC +9:00 hours
3:00 am03:00 Mountain Daylight Time (MDT). Offset UTC -6:00 hours
2:00 am02:00 Pacific Daylight Time (PDT). Offset UTC -7:00 hours
4:00 am04:00 Central Daylight Time (CDT). Offset UTC -5:00 hours
9:00 am09:00 Universal Time Coordinated (UTC). Offset UTC 0:00 hours
10:00 am10:00 British Summer Time (BST). Offset UTC +1:00 hour
9:00 am09:00 GMT / 5:00 am05:00 EDT / 2:30 pm14:30 IST / 7:00 pm19:00 AEST / 10:00 pm22:00 SST / 6:00 pm18:00 JST / 3:00 am03:00 MDT / 2:00 am02:00 PDT / 4:00 am04:00 CDT / 9:00 am09:00 UTC / 10:00 am10:00 BST
| GMT | EDT | IST | AEST | SST | JST | MDT | PDT | CDT | UTC | BST |
|---|---|---|---|---|---|---|---|---|---|---|
| 12am (midnight) | 8pm | 5:30 am | 10am | 1pm | 9am | 6pm | 5pm | 7pm | 12am (midnight) | 1am |
| 1am | 9pm | 6:30 am | 11am | 2pm | 10am | 7pm | 6pm | 8pm | 1am | 2am |
| 2am | 10pm | 7:30 am | 12pm (noon) | 3pm | 11am | 8pm | 7pm | 9pm | 2am | 3am |
| 3am | 11pm | 8:30 am | 1pm | 4pm | 12pm (noon) | 9pm | 8pm | 10pm | 3am | 4am |
| 4am | 12am (midnight) | 9:30 am | 2pm | 5pm | 1pm | 10pm | 9pm | 11pm | 4am | 5am |
| 5am | 1am | 10:30 am | 3pm | 6pm | 2pm | 11pm | 10pm | 12am (midnight) | 5am | 6am |
| 6am | 2am | 11:30 am | 4pm | 7pm | 3pm | 12am (midnight) | 11pm | 1am | 6am | 7am |
| 7am | 3am | 12:30 pm | 5pm | 8pm | 4pm | 1am | 12am (midnight) | 2am | 7am | 8am |
| 8am | 4am | 1:30 pm | 6pm | 9pm | 5pm | 2am | 1am | 3am | 8am | 9am |
| 9am | 5am | 2:30 pm | 7pm | 10pm | 6pm | 3am | 2am | 4am | 9am | 10am |
| 10am | 6am | 3:30 pm | 8pm | 11pm | 7pm | 4am | 3am | 5am | 10am | 11am |
| 11am | 7am | 4:30 pm | 9pm | 12am (midnight) | 8pm | 5am | 4am | 6am | 11am | 12pm (noon) |
| 12pm (noon) | 8am | 5:30 pm | 10pm | 1am | 9pm | 6am | 5am | 7am | 12pm (noon) | 1pm |
| 1pm | 9am | 6:30 pm | 11pm | 2am | 10pm | 7am | 6am | 8am | 1pm | 2pm |
| 2pm | 10am | 7:30 pm | 12am (midnight) | 3am | 11pm | 8am | 7am | 9am | 2pm | 3pm |
| 3pm | 11am | 8:30 pm | 1am | 4am | 12am (midnight) | 9am | 8am | 10am | 3pm | 4pm |
| 4pm | 12pm (noon) | 9:30 pm | 2am | 5am | 1am | 10am | 9am | 11am | 4pm | 5pm |
| 5pm | 1pm | 10:30 pm | 3am | 6am | 2am | 11am | 10am | 12pm (noon) | 5pm | 6pm |
| 6pm | 2pm | 11:30 pm | 4am | 7am | 3am | 12pm (noon) | 11am | 1pm | 6pm | 7pm |
| 7pm | 3pm | 12:30 am | 5am | 8am | 4am | 1pm | 12pm (noon) | 2pm | 7pm | 8pm |
| 8pm | 4pm | 1:30 am | 6am | 9am | 5am | 2pm | 1pm | 3pm | 8pm | 9pm |
| 9pm | 5pm | 2:30 am | 7am | 10am | 6am | 3pm | 2pm | 4pm | 9pm | 10pm |
| 10pm | 6pm | 3:30 am | 8am | 11am | 7am | 4pm | 3pm | 5pm | 10pm | 11pm |
| 11pm | 7pm | 4:30 am | 9am | 12pm (noon) | 8am | 5pm | 4pm | 6pm | 11pm | 12am (midnight) |
| 0:00 | 20:00 | 5:30 | 10:00 | 13:00 | 9:00 | 18:00 | 17:00 | 19:00 | 0:00 | 1:00 |
| 1:00 | 21:00 | 6:30 | 11:00 | 14:00 | 10:00 | 19:00 | 18:00 | 20:00 | 1:00 | 2:00 |
| 2:00 | 22:00 | 7:30 | 12:00 | 15:00 | 11:00 | 20:00 | 19:00 | 21:00 | 2:00 | 3:00 |
| 3:00 | 23:00 | 8:30 | 13:00 | 16:00 | 12:00 | 21:00 | 20:00 | 22:00 | 3:00 | 4:00 |
| 4:00 | 0:00 | 9:30 | 14:00 | 17:00 | 13:00 | 22:00 | 21:00 | 23:00 | 4:00 | 5:00 |
| 5:00 | 1:00 | 10:30 | 15:00 | 18:00 | 14:00 | 23:00 | 22:00 | 0:00 | 5:00 | 6:00 |
| 6:00 | 2:00 | 11:30 | 16:00 | 19:00 | 15:00 | 0:00 | 23:00 | 1:00 | 6:00 | 7:00 |
| 7:00 | 3:00 | 12:30 | 17:00 | 20:00 | 16:00 | 1:00 | 0:00 | 2:00 | 7:00 | 8:00 |
| 8:00 | 4:00 | 13:30 | 18:00 | 21:00 | 17:00 | 2:00 | 1:00 | 3:00 | 8:00 | 9:00 |
| 9:00 | 5:00 | 14:30 | 19:00 | 22:00 | 18:00 | 3:00 | 2:00 | 4:00 | 9:00 | 10:00 |
| 10:00 | 6:00 | 15:30 | 20:00 | 23:00 | 19:00 | 4:00 | 3:00 | 5:00 | 10:00 | 11:00 |
| 11:00 | 7:00 | 16:30 | 21:00 | 0:00 | 20:00 | 5:00 | 4:00 | 6:00 | 11:00 | 12:00 |
| 12:00 | 8:00 | 17:30 | 22:00 | 1:00 | 21:00 | 6:00 | 5:00 | 7:00 | 12:00 | 13:00 |
| 13:00 | 9:00 | 18:30 | 23:00 | 2:00 | 22:00 | 7:00 | 6:00 | 8:00 | 13:00 | 14:00 |
| 14:00 | 10:00 | 19:30 | 0:00 | 3:00 | 23:00 | 8:00 | 7:00 | 9:00 | 14:00 | 15:00 |
| 15:00 | 11:00 | 20:30 | 1:00 | 4:00 | 0:00 | 9:00 | 8:00 | 10:00 | 15:00 | 16:00 |
| 16:00 | 12:00 | 21:30 | 2:00 | 5:00 | 1:00 | 10:00 | 9:00 | 11:00 | 16:00 | 17:00 |
| 17:00 | 13:00 | 22:30 | 3:00 | 6:00 | 2:00 | 11:00 | 10:00 | 12:00 | 17:00 | 18:00 |
| 18:00 | 14:00 | 23:30 | 4:00 | 7:00 | 3:00 | 12:00 | 11:00 | 13:00 | 18:00 | 19:00 |
| 19:00 | 15:00 | 0:30 | 5:00 | 8:00 | 4:00 | 13:00 | 12:00 | 14:00 | 19:00 | 20:00 |
| 20:00 | 16:00 | 1:30 | 6:00 | 9:00 | 5:00 | 14:00 | 13:00 | 15:00 | 20:00 | 21:00 |
| 21:00 | 17:00 | 2:30 | 7:00 | 10:00 | 6:00 | 15:00 | 14:00 | 16:00 | 21:00 | 22:00 |
| 22:00 | 18:00 | 3:30 | 8:00 | 11:00 | 7:00 | 16:00 | 15:00 | 17:00 | 22:00 | 23:00 |
| 23:00 | 19:00 | 4:30 | 9:00 | 12:00 | 8:00 | 17:00 | 16:00 | 18:00 | 23:00 | 0:00 |
Greenwich Mean Time
Offset: GMT is 0 hours ahead Greenwich Mean Time (GMT) and is used in Europe
Countries: It is used in following countries: 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 timezone is London from United Kingdom with population about 7.557 million people. Other major cities in the area are Abidjan, Dakar, Grand Dakar, Accra
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 representations, usage and related time zones
- Z - is the zone designator for the zero UTC/GMT offset, also known as 'Zulu' time
- +00 - basic short
- +0000 - basic
- +00:00 - extended
- +0000 - sign character (+) followed by a four digit time providing hours (00) and minutes (00) of the offset. Indicates zero hour and zero minutes time differences of the zero meridian.
- Zulu - Military abbreviation for GMT
- Z - short form of 'Zulu'
- 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
- Greenwich Mean Time - UTC +0
- GMT+05:00 - UTC +5
- GMT+03:00 - UTC +3
- GMT - UTC +1
- GMT-01:00 - UTC -1
- GMT+11:00 - UTC +11
- 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 Standard Time
Offset: EST is 5 hours behind Greenwich Mean Time (GMT) and is used in North America
Countries: It is used in following countries: Bahamas, Canada, Haiti, Jamaica, Cayman Islands, Mexico, Panama, Turks & Caicos Is, United States
Principal Cities: The largest city in the EST timezone is New York City from USA with population about 8.175 million people. Other major cities in the area are Toronto, Montreal, Brooklyn, Borough of Queens
French: HNE - Heure Normale de l'Est
Spanish: ET - Tiempo del Este, ET - Zona Sureste
Daylight Saving: This is a standard time zone, however during summer some places switch clocks for one hour forward when daylight saving comes into effect and observe Eastern Daylight Time (EDT).
End: Eastern Standard Time (EST) has ended on Sunday, March 9, 2025 at 2:00 am local time and clocks were set one hour forward to Sunday, March 9, 2025, 3:00 am local daylight time instead. Standard time ends annually the on second Sunday of March.
Start: Eastern Standard Time (EST) starts on Sunday, November 2, 2025 at 2:00 am local time and clocks are set one hour back to Sunday, November 2, 2025, 1:00 am. Standard time starts annually the on first Sunday of November.
EST representations, usage and related time zones
- -05 - basic short
- -0500 - basic
- -05:00 - extended
- -0500 - sign character (-) followed by a four digit time providing hours (05) and minutes (00) of the offset. Indicates five hour and zero minutes time differences to the west of the zero meridian.
- Romeo - Military abbreviation for EST
- R - short form of 'Romeo'
- 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
- 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
India Standard Time
Offset: IST is 5 hours and 30 minutes ahead Greenwich Mean Time (GMT) and is used in Asia
Countries: It is used in following countries: India
Principal Cities: The largest city in the IST timezone is Mumbai from India with population about 12.692 million people. Other major cities in the area are Delhi, Bangalore, Kolkata, Chennai
Daylight Saving: India Standard Time (IST) is not adjusted for daylight saving therefore IST remains the same through out the year. This means, unlike some time zones where the clock is set forward by one hour every summer and backward by one hour during winter to adjust for daylight saving, India Standard Time remains the same
IST representations, usage and related time zones
- +0530 - basic
- +05:30 - extended
- +0530 - sign character (+) followed by a four digit time providing hours (05) and minutes (30) of the offset. Indicates five hour and thirty minutes time differences to the east of the zero meridian.
- Asia/Calcutta
- Asia/Kolkata
- India Standard Time - UTC +5:30
- Irish Standard Time - UTC +1
- Israel Standard Time - UTC +2
- Iran Standard Time - UTC +3:30
Australian Eastern Standard Time
Offset: AEST is 10 hours ahead Greenwich Mean Time (GMT) and is used in Australia
Countries: It is used in following countries: Australia
Principal Cities: The largest city in the AEST timezone is Sydney from Australia with population about 4.627 million people. Other major cities in the area are Melbourne, Brisbane, Gold Coast, Canberra
Daylight Saving: This is a standard time zone, however during summer some places switch clocks for one hour forward when daylight saving comes into effect and observe Australian Eastern Daylight Time (AEDT).
End: Australian Eastern Standard Time (AEST) has ended on Sunday, October 5, 2025 at 2:00 am local time and clocks were set one hour forward to Sunday, October 5, 2025, 3:00 am local daylight time instead. Standard time ends annually the on first Sunday of October.
Start: Australian Eastern Standard Time (AEST) starts on Sunday, April 5, 2026 at 3:00 am local time and clocks are set one hour back to Sunday, April 5, 2026, 2:00 am. Standard time starts annually the on first Sunday of April.
Australian Eastern Standard Time (AEST) is used in Queensland, Victoria, Tasmania, New South Wales (except Broken Hill), Australian Capital Territory and in folling major cities Brisbane, Sydney, Melbourne, Hobart, Canberra
Only part of Australia observe daylight saving. It is used in New South Wales, Victoria, South Australia, Tasmania, and the Australian Capital Territory. Daylight saving is not observed in Queensland, Western Australia or the Northern Territory.
AEST representations, usage and related time zones
- +10 - basic short
- +1000 - basic
- +10:00 - extended
- +1000 - sign character (+) followed by a four digit time providing hours (10) and minutes (00) of the offset. Indicates ten hour and zero minutes time differences to the east of the zero meridian.
- Kilo - Military abbreviation for AEST
- K - short form of 'Kilo'
- Antarctica/Macquarie
- Australia/ACT
- Australia/Brisbane
- Australia/Canberra
- Australia/Currie
- Australia/Hobart
- Australia/Lindeman
- Australia/Melbourne
- Australia/NSW
- Australia/Queensland
- Australia/Sydney
- Australia/Tasmania
- Australia/Victoria
- AEST - Australian Eastern Standard Time
- CHUT - Chuuk Time
- ChST - Chamorro Standard Time
- K - Kilo Time Zone
- KDT - Korea Daylight Time
- PGT - Papua New Guinea Time
- VLAT - Vladivostok Time
- YAKST - Yakutsk Summer Time
- YAPT - Yap Time
Samoa Standard Time
Offset: SST is 11 hours behind Greenwich Mean Time (GMT) and is used in Pacific
Countries: It is used in following countries: Samoa (American), US minor outlying islands
Principal Cities: The largest city in the SST timezone is Pago Pago from American Samoa with population about 11,500 people.
Daylight Saving: Samoa Standard Time (SST) is not adjusted for daylight saving therefore SST remains the same through out the year. This means, unlike some time zones where the clock is set forward by one hour every summer and backward by one hour during winter to adjust for daylight saving, Samoa Standard Time remains the same
SST representations, usage and related time zones
- -11 - basic short
- -1100 - basic
- -11:00 - extended
- -1100 - sign character (-) followed by a four digit time providing hours (11) and minutes (00) of the offset. Indicates eleven hour and zero minutes time differences to the west of the zero meridian.
- X-ray - Military abbreviation for SST
- X - short form of 'X-ray'
- Pacific/Midway
- Pacific/Pago_Pago
- Pacific/Samoa
- US/Samoa
- Samoa Standard Time - UTC -11
- Samara Standard Time - UTC +4
- Sakhalin Standard Time - UTC +11
- NUT - Niue Time
- SST - Samoa Standard Time
- X - X-ray Time Zone
Japan Standard Time
Offset: JST is 9 hours ahead Greenwich Mean Time (GMT) and is used in Asia
Countries: It is used in following countries: Japan
Principal Cities: The largest city in the JST timezone is Tokyo from Japan with population about 8.337 million people. Other major cities in the area are Yokohama, Osaka shi, Nagoya shi, Sapporo
Daylight Saving: Japan Standard Time (JST) is not adjusted for daylight saving therefore JST remains the same through out the year. This means, unlike some time zones where the clock is set forward by one hour every summer and backward by one hour during winter to adjust for daylight saving, Japan Standard Time remains the same
JST representations, usage and related time zones
- +09 - basic short
- +0900 - basic
- +09:00 - extended
- +0900 - sign character (+) followed by a four digit time providing hours (09) and minutes (00) of the offset. Indicates nine hour and zero minutes time differences to the east of the zero meridian.
- India - Military abbreviation for JST
- I - short form of 'India'
- Asia/Tokyo
- Japan
- AWDT - Australian Western Daylight Time
- CHOST - Choibalsan Summer Time
- I - India Time Zone
- IRKST - Irkutsk Summer Time
- JST - Japan Standard Time
- KST - Korea Standard Time
- PWT - Palau Time
- TLT - East Timor Time
- ULAST - Ulaanbaatar Summer Time
- WIT - Eastern Indonesian Time
- YAKT - Yakutsk Time
Mountain Daylight Time
Offset: MDT is 6 hours behind Greenwich Mean Time (GMT) and is used in North America
Countries: It is used in following countries: Canada, Mexico, United States
Principal Cities: The largest city in the MDT timezone is Calgary from Canada with population about 1.02 million people. Other major cities in the area are Edmonton, El Paso, Denver, Albuquerque
French: HAR - Heure Avancée des Rocheuses
Spanish: MT - Zona Pacífico
Daylight Saving: Mountain Daylight Time (MDT) is a daylight saving/summer timezone, however during winter some places switch clocks for one hour back and observe Mountain Standard Time (MST).
Start: Mountain Daylight Time (MDT) started on Sunday, March 9, 2025 at 2:00 am local time and clocks were set one hour forward to Sunday, March 9, 2025, 3:00 am. Daylight saving starts annually the on second Sunday of March
End: Mountain Daylight Time (MDT) ends on Sunday, November 2, 2025 at 2:00 am local time and clocks are set one hour back to Sunday, November 2, 2025, 1:00 am local standard time instead. Daylight saving ends annually the on first Sunday of November
MDT representations, usage and related time zones
- -06 - basic short
- -0600 - basic
- -06:00 - extended
- -0600 - sign character (-) followed by a four digit time providing hours (06) and minutes (00) of the offset. Indicates six hour and zero minutes time differences to the west of the zero meridian.
- Sierra - Military abbreviation for MDT
- S - short form of 'Sierra'
- America/Boise
- America/Cambridge_Bay
- America/Ciudad_Juarez
- America/Denver
- America/Edmonton
- America/Inuvik
- America/Shiprock
- America/Yellowknife
- Canada/Mountain
- MST7MDT
- Navajo
- US/Mountain
- CST - Central Standard Time
- CT - Central Time
- MDT - Mountain Daylight Time
- EAST - Easter Island Standard Time
- GALT - Galapagos Time
- S - Sierra Time Zone
Pacific Standard Time
Offset: PST is 8 hours behind Greenwich Mean Time (GMT) and is used in North America
Countries: It is used in following countries: Canada, Mexico, United States
Principal Cities: The largest city in the PST timezone is Los Angeles from USA with population about 3.793 million people. Other major cities in the area are Vancouver, Tijuana, San Diego, San Jose
French: HNP - Heure Normale du Pacifique
Spanish: PT - Tiempo del Pacífico, PT - Zona Noroeste
Daylight Saving: This is a standard time zone, however during summer some places switch clocks for one hour forward when daylight saving comes into effect and observe Pacific Daylight Time (PDT).
End: Pacific Standard Time (PST) has ended on Sunday, March 9, 2025 at 2:00 am local time and clocks were set one hour forward to Sunday, March 9, 2025, 3:00 am local daylight time instead. Standard time ends annually the on second Sunday of March.
Start: Pacific Standard Time (PST) starts on Sunday, November 2, 2025 at 2:00 am local time and clocks are set one hour back to Sunday, November 2, 2025, 1:00 am. Standard time starts annually the on first Sunday of November.
PST representations, usage and related time zones
- -08 - basic short
- -0800 - basic
- -08:00 - extended
- -0800 - sign character (-) followed by a four digit time providing hours (08) and minutes (00) of the offset. Indicates eight hour and zero minutes time differences to the west of the zero meridian.
- Uniform - Military abbreviation for PST
- U - short form of 'Uniform'
- America/Ensenada
- America/Los_Angeles
- America/Santa_Isabel
- America/Tijuana
- America/Vancouver
- Canada/Pacific
- Mexico/BajaNorte
- PST8PDT
- US/Pacific
- Pacific Standard Time - UTC -8
- Pitcairn Standard Time - UTC -8
- Peru Standard Time - UTC -5
- AKDT - Alaska Daylight Time
- PST - Pacific Standard Time
- PT - Pacific Time
- PST - Pitcairn Standard Time
- U - Uniform Time Zone
Central Standard Time
Offset: CST is 6 hours behind Greenwich Mean Time (GMT) and is used in North America
Countries: It is used in following countries: Belize, Canada, Costa Rica, Guatemala, Honduras, Mexico, Nicaragua, El Salvador, United States
Principal Cities: The largest city in the CST timezone is Mexico City from Mexico with population about 12.294 million people. Other major cities in the area are Chicago, Houston, Iztapalapa, Ecatepec
French: HNC - Heure Normale du Centre
Spanish: CT - Tiempo Central Estándar, CT - Zona Centro
Daylight Saving: This is a standard time zone, however during summer some places switch clocks for one hour forward when daylight saving comes into effect and observe Central Daylight Time (CDT).
End: Central Standard Time (CST) has ended on Sunday, March 9, 2025 at 2:00 am local time and clocks were set one hour forward to Sunday, March 9, 2025, 3:00 am local daylight time instead. Standard time ends annually the on second Sunday of March.
Start: Central Standard Time (CST) starts on Sunday, November 2, 2025 at 2:00 am local time and clocks are set one hour back to Sunday, November 2, 2025, 1:00 am. Standard time starts annually the on first Sunday of November.
CST representations, usage and related time zones
- -06 - basic short
- -0600 - basic
- -06:00 - extended
- -0600 - sign character (-) followed by a four digit time providing hours (06) and minutes (00) of the offset. Indicates six hour and zero minutes time differences to the west of the zero meridian.
- Sierra - Military abbreviation for CST
- S - short form of 'Sierra'
- America/Bahia_Banderas
- America/Belize
- America/Chicago
- America/Chihuahua
- America/Costa_Rica
- America/El_Salvador
- America/Guatemala
- America/Indiana/Knox
- America/Indiana/Tell_City
- America/Knox_IN
- America/Managua
- America/Matamoros
- America/Menominee
- America/Merida
- America/Mexico_City
- America/Monterrey
- America/North_Dakota/Beulah
- America/North_Dakota/Center
- America/North_Dakota/New_Salem
- America/Ojinaga
- America/Rainy_River
- America/Rankin_Inlet
- America/Regina
- America/Resolute
- America/Swift_Current
- America/Tegucigalpa
- America/Winnipeg
- CST6CDT
- Canada/Central
- Canada/Saskatchewan
- Mexico/General
- US/Central
- US/Indiana-Starke
- Central Standard Time - UTC -6
- China Standard Time - UTC +8
- Cuba Standard Time - UTC -5
- Colombia Standard Time - UTC -5
- CST - Central Standard Time
- CT - Central Time
- MDT - Mountain Daylight Time
- EAST - Easter Island Standard Time
- GALT - Galapagos Time
- S - Sierra Time Zone
Universal Time Coordinated
Offset: UTC is 0 hours ahead Greenwich Mean Time (GMT) and is used in Universal
Coordinated Universal Time (UTC) is the world time standard that regulates clocks and time. It is successor to Greenwich Mean Time (GMT). For casual use, UTC is the same as GMT, but is used by the scientific community.
UTC is the time standard commonly used across the world since 1972. It is used in many technical fields, like aviation industry and meteorologists, also used to synchronize time across internet networks.
UTC representations, usage and related time zones
- Z - is the zone designator for the zero UTC/GMT offset, also known as 'Zulu' time
- +00 - basic short
- +0000 - basic
- +00:00 - extended
- +0000 - sign character (+) followed by a four digit time providing hours (00) and minutes (00) of the offset. Indicates zero hour and zero minutes time differences of the zero meridian.
- Zulu - Military abbreviation for UTC
- Z - short form of 'Zulu'
- Etc/UCT
- Etc/UTC
- Etc/Universal
- Etc/Zulu
- UCT
- UTC
- Universal
- Zulu
- 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
British Summer Time
Offset: BST is 1 hour ahead Greenwich Mean Time (GMT) and is used in Europe
Countries: It is used in following countries: Britain (UK), Guernsey, Isle of Man, Jersey
Principal Cities: The largest city in the BST timezone is London from United Kingdom with population about 7.557 million people. Other major cities in the area are Birmingham, Glasgow, Liverpool, Saint Helier
Daylight Saving: British Summer Time (BST) is a daylight saving/summer timezone, however during winter some places switch clocks for one hour back and observe Greenwich Mean Time (GMT).
Start: British Summer Time (BST) started on Sunday, March 30, 2025 at 1:00 am local time and clocks were set one hour forward to Sunday, March 30, 2025, 2:00 am. Daylight saving starts annually the on last Sunday of March
End: British Summer Time (BST) ends on Sunday, October 26, 2025 at 2:00 am local time and clocks are set one hour back to Sunday, October 26, 2025, 1:00 am local standard time instead. Daylight saving ends annually the on last Sunday of October
BST representations, usage and related time zones
- +01 - basic short
- +0100 - basic
- +01:00 - extended
- +0100 - sign character (+) followed by a four digit time providing hours (01) and minutes (00) of the offset. Indicates one hour and zero minutes time differences to the east of the zero meridian.
- Alpha - Military abbreviation for BST
- A - short form of 'Alpha'
- Europe/Belfast
- Europe/Guernsey
- Europe/Isle_of_Man
- Europe/Jersey
- Europe/London
- GB
- GB-Eire
- British Summer Time - UTC +1
- Bangladesh Standard Time - UTC +6
- Bougainville Standard Time - UTC +11
- Brasilia Standard Time - UTC -3
- 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