EST to CST to MST to PST to AKST to HAST to GMT to ACST to AWST to HKT
Time Difference
Eastern Daylight Time is 1 hour ahead of Central Daylight Time and 2 hours ahead of Mountain Daylight Time and 3 hours ahead of Pacific Daylight Time and 4 hours ahead of Alaska Daylight Time and 6 hours ahead of Hawaii-Aleutian Standard Time and 4 hours behind Greenwich Mean Time and 13 hours and 30 minutes behind Australian Central Standard Time and 12 hours behind Australian Western Standard Time and 12 hours behind Hong Kong Time
10:30 am10:30 in EDT is 9:30 am09:30 in CDT and is 8:30 am08:30 in MDT and is 7:30 am07:30 in PDT and is 6:30 am06:30 in AKDT and is 4:30 am04:30 in HAST and is 2:30 pm14:30 in GMT and is 12:00 am00:00 in ACST and is 10:30 pm22:30 in AWST and is 10:30 pm22:30 in HKT
EST to CST call time
Best time for a conference call or a meeting is between 9am-6pm in EST which corresponds to 8am-5pm in CST
EST to MST call time
Best time for a conference call or a meeting is between 10am-6pm in EST which corresponds to 8am-4pm in MST
EST to PST call time
Best time for a conference call or a meeting is between 11am-6pm in EST which corresponds to 8am-3pm in PST
EST to AKST call time
Best time for a conference call or a meeting is between 12pm-6pm in EST which corresponds to 8am-2pm in AKST
EST to HAST call time
Best time for a conference call or a meeting is between 1pm-6pm in EST which corresponds to 8am-1pm in HAST
EST to GMT call time
Best time for a conference call or a meeting is between 8am-1pm in EST which corresponds to 1pm-6pm in GMT
EST to ACST call time
Best time for a conference call or a meeting is between 5:30am-7:30am in EST which corresponds to 8pm-10pm in ACST
EST to AWST call time
Best time for a conference call or a meeting is between 6:30am-8:30am in EST which corresponds to 7:30pm-9:30pm in AWST
EST to HKT call time
Best time for a conference call or a meeting is between 6:30am-8:30am in EST which corresponds to 7:30pm-9:30pm in HKT
10:30 am10:30 Eastern Daylight Time (EDT). Offset UTC -4:00 hours
9:30 am09:30 Central Daylight Time (CDT). Offset UTC -5:00 hours
8:30 am08:30 Mountain Daylight Time (MDT). Offset UTC -6:00 hours
7:30 am07:30 Pacific Daylight Time (PDT). Offset UTC -7:00 hours
6:30 am06:30 Alaska Daylight Time (AKDT). Offset UTC -8:00 hours
4:30 am04:30 Hawaii-Aleutian Standard Time (HAST). Offset UTC -10:00 hours
2:30 pm14:30 Greenwich Mean Time (GMT). Offset UTC 0:00 hours
12:00 am00:00 Australian Central Standard Time (ACST). Offset UTC +9:30 hours
10:30 pm22:30 Australian Western Standard Time (AWST). Offset UTC +8:00 hours
10:30 pm22:30 Hong Kong Time (HKT). Offset UTC +8:00 hours
10:30 am10:30 EDT / 9:30 am09:30 CDT / 8:30 am08:30 MDT / 7:30 am07:30 PDT / 6:30 am06:30 AKDT / 4:30 am04:30 HAST / 2:30 pm14:30 GMT / 12:00 am00:00 ACST / 10:30 pm22:30 AWST / 10:30 pm22:30 HKT
| EDT | CDT | MDT | PDT | AKDT | HAST | GMT | ACST | AWST | HKT |
|---|---|---|---|---|---|---|---|---|---|
| 12am (midnight) | 11pm | 10pm | 9pm | 8pm | 6pm | 4am | 1:30 pm | 12pm (noon) | 12pm (noon) |
| 1am | 12am (midnight) | 11pm | 10pm | 9pm | 7pm | 5am | 2:30 pm | 1pm | 1pm |
| 2am | 1am | 12am (midnight) | 11pm | 10pm | 8pm | 6am | 3:30 pm | 2pm | 2pm |
| 3am | 2am | 1am | 12am (midnight) | 11pm | 9pm | 7am | 4:30 pm | 3pm | 3pm |
| 4am | 3am | 2am | 1am | 12am (midnight) | 10pm | 8am | 5:30 pm | 4pm | 4pm |
| 5am | 4am | 3am | 2am | 1am | 11pm | 9am | 6:30 pm | 5pm | 5pm |
| 6am | 5am | 4am | 3am | 2am | 12am (midnight) | 10am | 7:30 pm | 6pm | 6pm |
| 7am | 6am | 5am | 4am | 3am | 1am | 11am | 8:30 pm | 7pm | 7pm |
| 8am | 7am | 6am | 5am | 4am | 2am | 12pm (noon) | 9:30 pm | 8pm | 8pm |
| 9am | 8am | 7am | 6am | 5am | 3am | 1pm | 10:30 pm | 9pm | 9pm |
| 10am | 9am | 8am | 7am | 6am | 4am | 2pm | 11:30 pm | 10pm | 10pm |
| 11am | 10am | 9am | 8am | 7am | 5am | 3pm | 12:30 am | 11pm | 11pm |
| 12pm (noon) | 11am | 10am | 9am | 8am | 6am | 4pm | 1:30 am | 12am (midnight) | 12am (midnight) |
| 1pm | 12pm (noon) | 11am | 10am | 9am | 7am | 5pm | 2:30 am | 1am | 1am |
| 2pm | 1pm | 12pm (noon) | 11am | 10am | 8am | 6pm | 3:30 am | 2am | 2am |
| 3pm | 2pm | 1pm | 12pm (noon) | 11am | 9am | 7pm | 4:30 am | 3am | 3am |
| 4pm | 3pm | 2pm | 1pm | 12pm (noon) | 10am | 8pm | 5:30 am | 4am | 4am |
| 5pm | 4pm | 3pm | 2pm | 1pm | 11am | 9pm | 6:30 am | 5am | 5am |
| 6pm | 5pm | 4pm | 3pm | 2pm | 12pm (noon) | 10pm | 7:30 am | 6am | 6am |
| 7pm | 6pm | 5pm | 4pm | 3pm | 1pm | 11pm | 8:30 am | 7am | 7am |
| 8pm | 7pm | 6pm | 5pm | 4pm | 2pm | 12am (midnight) | 9:30 am | 8am | 8am |
| 9pm | 8pm | 7pm | 6pm | 5pm | 3pm | 1am | 10:30 am | 9am | 9am |
| 10pm | 9pm | 8pm | 7pm | 6pm | 4pm | 2am | 11:30 am | 10am | 10am |
| 11pm | 10pm | 9pm | 8pm | 7pm | 5pm | 3am | 12:30 pm | 11am | 11am |
| 0:00 | 23:00 | 22:00 | 21:00 | 20:00 | 18:00 | 4:00 | 13:30 | 12:00 | 12:00 |
| 1:00 | 0:00 | 23:00 | 22:00 | 21:00 | 19:00 | 5:00 | 14:30 | 13:00 | 13:00 |
| 2:00 | 1:00 | 0:00 | 23:00 | 22:00 | 20:00 | 6:00 | 15:30 | 14:00 | 14:00 |
| 3:00 | 2:00 | 1:00 | 0:00 | 23:00 | 21:00 | 7:00 | 16:30 | 15:00 | 15:00 |
| 4:00 | 3:00 | 2:00 | 1:00 | 0:00 | 22:00 | 8:00 | 17:30 | 16:00 | 16:00 |
| 5:00 | 4:00 | 3:00 | 2:00 | 1:00 | 23:00 | 9:00 | 18:30 | 17:00 | 17:00 |
| 6:00 | 5:00 | 4:00 | 3:00 | 2:00 | 0:00 | 10:00 | 19:30 | 18:00 | 18:00 |
| 7:00 | 6:00 | 5:00 | 4:00 | 3:00 | 1:00 | 11:00 | 20:30 | 19:00 | 19:00 |
| 8:00 | 7:00 | 6:00 | 5:00 | 4:00 | 2:00 | 12:00 | 21:30 | 20:00 | 20:00 |
| 9:00 | 8:00 | 7:00 | 6:00 | 5:00 | 3:00 | 13:00 | 22:30 | 21:00 | 21:00 |
| 10:00 | 9:00 | 8:00 | 7:00 | 6:00 | 4:00 | 14:00 | 23:30 | 22:00 | 22:00 |
| 11:00 | 10:00 | 9:00 | 8:00 | 7:00 | 5:00 | 15:00 | 0:30 | 23:00 | 23:00 |
| 12:00 | 11:00 | 10:00 | 9:00 | 8:00 | 6:00 | 16:00 | 1:30 | 0:00 | 0:00 |
| 13:00 | 12:00 | 11:00 | 10:00 | 9:00 | 7:00 | 17:00 | 2:30 | 1:00 | 1:00 |
| 14:00 | 13:00 | 12:00 | 11:00 | 10:00 | 8:00 | 18:00 | 3:30 | 2:00 | 2:00 |
| 15:00 | 14:00 | 13:00 | 12:00 | 11:00 | 9:00 | 19:00 | 4:30 | 3:00 | 3:00 |
| 16:00 | 15:00 | 14:00 | 13:00 | 12:00 | 10:00 | 20:00 | 5:30 | 4:00 | 4:00 |
| 17:00 | 16:00 | 15:00 | 14:00 | 13:00 | 11:00 | 21:00 | 6:30 | 5:00 | 5:00 |
| 18:00 | 17:00 | 16:00 | 15:00 | 14:00 | 12:00 | 22:00 | 7:30 | 6:00 | 6:00 |
| 19:00 | 18:00 | 17:00 | 16:00 | 15:00 | 13:00 | 23:00 | 8:30 | 7:00 | 7:00 |
| 20:00 | 19:00 | 18:00 | 17:00 | 16:00 | 14:00 | 0:00 | 9:30 | 8:00 | 8:00 |
| 21:00 | 20:00 | 19:00 | 18:00 | 17:00 | 15:00 | 1:00 | 10:30 | 9:00 | 9:00 |
| 22:00 | 21:00 | 20:00 | 19:00 | 18:00 | 16:00 | 2:00 | 11:30 | 10:00 | 10:00 |
| 23:00 | 22:00 | 21:00 | 20:00 | 19:00 | 17:00 | 3:00 | 12:30 | 11:00 | 11:00 |
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
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
Mountain Standard Time
Offset: MST is 7 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 MST timezone is Phoenix from USA with population about 1.446 million people. Other major cities in the area are Calgary, Edmonton, El Paso, Denver
French: HNR - Heure Normale des Rocheuses
Spanish: MT - Zona Pacífico
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 Mountain Daylight Time (MDT).
End: Mountain Standard Time (MST) 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: Mountain Standard Time (MST) 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.
MST representations, usage and related time zones
- -07 - basic short
- -0700 - basic
- -07:00 - extended
- -0700 - sign character (-) followed by a four digit time providing hours (07) and minutes (00) of the offset. Indicates seven hour and zero minutes time differences to the west of the zero meridian.
- Tango - Military abbreviation for MST
- T - short form of 'Tango'
- 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
- Mountain Standard Time - UTC -7
- Moscow Standard Time - UTC +3
- Mauritius Standard Time - UTC +4
- MST - Mountain Standard Time
- PDT - Pacific Daylight Time
- YST - Yukon Standard Time
- T - Tango 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
Alaska Standard Time
Offset: AKST is 9 hours behind Greenwich Mean Time (GMT) and is used in North America
Countries: It is used in following countries: United States
Principal Cities: The largest city in the AKST timezone is Anchorage from USA with population about 291,826 people. Other major cities in the area are Fairbanks, Juneau, Eagle River, Badger
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 Alaska Daylight Time (AKDT).
End: Alaska Standard Time (AKST) 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: Alaska Standard Time (AKST) 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.
AKST 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 west of the zero meridian.
- Victor - Military abbreviation for AKST
- V - short form of 'Victor'
- America/Anchorage
- America/Juneau
- America/Metlakatla
- America/Nome
- America/Sitka
- America/Yakutat
- US/Alaska
- AKST - Alaska Standard Time
- AHDT - Alaska-Hawaii Daylight Time
- HADT - Hawaii-Aleutian Daylight Time
- GAMT - Gambier Time
- HDT - Hawaii Daylight Time
- V - Victor Time Zone
Hawaii-Aleutian Standard Time
Offset: HAST is 10 hours behind Greenwich Mean Time (GMT) and is used in North America
HAST 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 west of the zero meridian.
- Whiskey - Military abbreviation for HAST
- W - short form of 'Whiskey'
- HAST - Hawaii-Aleutian Standard Time
- CKT - Cook Island Time
- HST - Hawaii Standard Time
- TAHT - Tahiti Time
- W - Whiskey Time Zone
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+03:00 - UTC +3
- GMT - UTC +1
- GMT+11:00 - UTC +11
- GMT-01:00 - UTC -1
- 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
Australian Central Standard Time
Offset: ACST is 9 hours and 30 minutes 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 ACST timezone is Adelaide from Australia with population about 1.225 million people. Other major cities in the area are Darwin, Adelaide Hills, Alice Springs, Palmerston
Daylight Saving: This is a standard timezone, however during summer some places switch clocks for one hour forward when daylight saving comes into effect and observe Australian Central Daylight Time (ACDT).
Start: Australian Central Standard Time (ACST) started on Sunday, April 6, 2025 at 3:00 am local time and clocks were set one hour back to Sunday, April 6, 2025, 2:00 am. Standard time starts annually the on first Sunday of April.
End: Australian Central Standard Time (ACST) ends on Sunday, October 5, 2025 at 2:00 am local time and clocks are set one hour forward to Sunday, October 5, 2025, 3:00 am local daylight time instead. Standard time starts annually the on first Sunday of October.
ACST representations, usage and related time zones
- +0930 - basic
- +09:30 - extended
- +0930 - sign character (+) followed by a four digit time providing hours (09) and minutes (30) of the offset. Indicates nine hour and thirty minutes time differences to the east of the zero meridian.
- Australia/Adelaide
- Australia/Broken_Hill
- Australia/Darwin
- Australia/North
- Australia/South
- Australia/Yancowinna
Australian Western Standard Time
Offset: AWST is 8 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 AWST timezone is Perth from Australia with population about 1.897 million people. Other major cities in the area are Rockingham, Mandurah, Bunbury, Armadale
Daylight Saving: Australian Western Standard Time (AWST) is not adjusted for daylight saving therefore AWST 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, Australian Western Standard Time remains the same
AWST 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 east of the zero meridian.
- Hotel - Military abbreviation for AWST
- H - short form of 'Hotel'
- Australia/Perth
- Australia/West
- ACT - ASEAN Common Time
- AWST - Australian Western Standard Time
- BNT - Brunei Darussalam Time
- CAST - Casey Time
- CHOT - Choibalsan Time
- CST - China Standard Time
- H - Hotel Time Zone
- HKT - Hong Kong Time
- HOVST - Hovd Summer Time
- IRKT - Irkutsk Time
- KRAST - Krasnoyarsk Summer Time
- MYT - Malaysia Time
- PHT - Philippine Time
- SGT - Singapore Time
- ULAT - Ulaanbaatar Time
- WITA - Central Indonesian Time
Hong Kong Time
Offset: HKT is 8 hours ahead Greenwich Mean Time (GMT) and is used in Asia
Countries: It is used in following countries: Hong Kong
Principal Cities: The largest city in the HKT timezone is Hong Kong from Hong Kong with population about 7.013 million people. Other major cities in the area are Kowloon, Tsuen Wan, Yuen Long Kau Hui, Sha Tin
Daylight Saving: Hong Kong Time (HKT) is not adjusted for daylight saving therefore HKT 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, Hong Kong Time remains the same
HKT 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 east of the zero meridian.
- Hotel - Military abbreviation for HKT
- H - short form of 'Hotel'
- Asia/Hong_Kong
- Hongkong
- ACT - ASEAN Common Time
- AWST - Australian Western Standard Time
- BNT - Brunei Darussalam Time
- CAST - Casey Time
- CHOT - Choibalsan Time
- CST - China Standard Time
- H - Hotel Time Zone
- HKT - Hong Kong Time
- HOVST - Hovd Summer Time
- IRKT - Irkutsk Time
- KRAST - Krasnoyarsk Summer Time
- MYT - Malaysia Time
- PHT - Philippine Time
- SGT - Singapore Time
- ULAT - Ulaanbaatar Time
- WITA - Central Indonesian Time