GMT to PST to EST to KST to HKT
Compare GMT time with PST, EST, KST, and HKT time, including current local time, UTC offsets, time difference, daylight saving changes, working hours, and shareable meeting times.
Time Difference
Greenwich Mean Time is 8 hours ahead of Pacific Standard Time and 5 hours ahead of Eastern Standard Time and 9 hours behind Korea Standard Time and 8 hours behind Hong Kong Time
12:00 pm12:00 in GMT is 4:00 am04:00 in PST and is 7:00 am07:00 in EST and is 9:00 pm21:00 in KST and is 8:00 pm20:00 in HKT
GMT to PST call time
Best time for a conference call or a meeting is between 4:30pm-5:30pm in GMT which corresponds to 8:30am-9:30am in PST
GMT to EST call time
Best time for a conference call or a meeting is between 2pm-5pm in GMT which corresponds to 9am-12pm in EST
GMT to KST call time
Best time for a conference call or a meeting is between 8am-9am in GMT which corresponds to 5pm-6pm in KST
GMT to HKT call time
Best time for a conference call or a meeting is between 8:30am-9:30am in GMT which corresponds to 4:30pm-5:30pm in HKT
12:00 pm12:00 Greenwich Mean Time (GMT). Offset UTC 0:00 hours
4:00 am04:00 Pacific Standard Time (PST). Offset UTC -8:00 hours
7:00 am07:00 Eastern Standard Time (EST). Offset UTC -5:00 hours
9:00 pm21:00 Korea Standard Time (KST). Offset UTC +9:00 hours
8:00 pm20:00 Hong Kong Time (HKT). Offset UTC +8:00 hours
12:00 pm12:00 GMT / 4:00 am04:00 PST / 7:00 am07:00 EST / 9:00 pm21:00 KST / 8:00 pm20:00 HKT
| GMT | PST | EST | KST | HKT |
|---|---|---|---|---|
| 12am (midnight) | 4pm | 7pm | 9am | 8am |
| 1am | 5pm | 8pm | 10am | 9am |
| 2am | 6pm | 9pm | 11am | 10am |
| 3am | 7pm | 10pm | 12pm (noon) | 11am |
| 4am | 8pm | 11pm | 1pm | 12pm (noon) |
| 5am | 9pm | 12am (midnight) | 2pm | 1pm |
| 6am | 10pm | 1am | 3pm | 2pm |
| 7am | 11pm | 2am | 4pm | 3pm |
| 8am | 12am (midnight) | 3am | 5pm | 4pm |
| 9am | 1am | 4am | 6pm | 5pm |
| 10am | 2am | 5am | 7pm | 6pm |
| 11am | 3am | 6am | 8pm | 7pm |
| 12pm (noon) | 4am | 7am | 9pm | 8pm |
| 1pm | 5am | 8am | 10pm | 9pm |
| 2pm | 6am | 9am | 11pm | 10pm |
| 3pm | 7am | 10am | 12am (midnight) | 11pm |
| 4pm | 8am | 11am | 1am | 12am (midnight) |
| 5pm | 9am | 12pm (noon) | 2am | 1am |
| 6pm | 10am | 1pm | 3am | 2am |
| 7pm | 11am | 2pm | 4am | 3am |
| 8pm | 12pm (noon) | 3pm | 5am | 4am |
| 9pm | 1pm | 4pm | 6am | 5am |
| 10pm | 2pm | 5pm | 7am | 6am |
| 11pm | 3pm | 6pm | 8am | 7am |
| 00:00 | 16:00 | 19:00 | 09:00 | 08:00 |
| 01:00 | 17:00 | 20:00 | 10:00 | 09:00 |
| 02:00 | 18:00 | 21:00 | 11:00 | 10:00 |
| 03:00 | 19:00 | 22:00 | 12:00 | 11:00 |
| 04:00 | 20:00 | 23:00 | 13:00 | 12:00 |
| 05:00 | 21:00 | 00:00 | 14:00 | 13:00 |
| 06:00 | 22:00 | 01:00 | 15:00 | 14:00 |
| 07:00 | 23:00 | 02:00 | 16:00 | 15:00 |
| 08:00 | 00:00 | 03:00 | 17:00 | 16:00 |
| 09:00 | 01:00 | 04:00 | 18:00 | 17:00 |
| 10:00 | 02:00 | 05:00 | 19:00 | 18:00 |
| 11:00 | 03:00 | 06:00 | 20:00 | 19:00 |
| 12:00 | 04:00 | 07:00 | 21:00 | 20:00 |
| 13:00 | 05:00 | 08:00 | 22:00 | 21:00 |
| 14:00 | 06:00 | 09:00 | 23:00 | 22:00 |
| 15:00 | 07:00 | 10:00 | 00:00 | 23:00 |
| 16:00 | 08:00 | 11:00 | 01:00 | 00:00 |
| 17:00 | 09:00 | 12:00 | 02:00 | 01:00 |
| 18:00 | 10:00 | 13:00 | 03:00 | 02:00 |
| 19:00 | 11:00 | 14:00 | 04:00 | 03:00 |
| 20:00 | 12:00 | 15:00 | 05:00 | 04:00 |
| 21:00 | 13:00 | 16:00 | 06:00 | 05:00 |
| 22:00 | 14:00 | 17:00 | 07:00 | 06:00 |
| 23:00 | 15:00 | 18:00 | 08:00 | 07:00 |
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, Britain (UK), Guernsey, Ghana, Greenland, Gambia, Guinea, Guinea-Bissau, Ireland, Isle of Man, Iceland, Jersey, Liberia, Mali, Mauritania, St Helena, Sierra Leone, Senegal, Sao Tome & Principe, Togo
Principal Cities: The largest city in the GMT time zone is London in United Kingdom, with about 7.557 million people. Other major cities in this time zone include 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 the zero UTC/GMT offset.
- 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
- 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
Pacific Standard Time
Offset: PST is 8 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 PST 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: HNP - Heure Normale du Pacifique
Spanish: PT - Tiempo del Pacífico, PT - Zona Noroeste
Daylight Saving: This is a standard time zone. During summer, some places set clocks forward one hour for daylight saving time and observe Pacific Daylight Time (PDT).
Start: Pacific Standard Time (PST) started on Sunday, November 2, 2025 at 2:00 am local time and clocks were set one hour back to Sunday, November 2, 2025, 1:00 am. Standard time starts annually on the first Sunday of November.
End: Pacific Standard Time (PST) ends on Sunday, March 8, 2026 at 2:00 am local time and clocks are set one hour forward to Sunday, March 8, 2026, 3:00 am local daylight time instead. Standard time ends annually on the second Sunday of March.
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 an offset of eight hours 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
- AKDT - Alaska Daylight Time
- PST - Pacific Standard Time
- PT - Pacific Time
- PST - Pitcairn Standard Time
- U - Uniform Time Zone
Eastern Standard Time
Offset: EST is 5 hours behind Greenwich Mean Time (GMT) and is used in North America
Countries using this time zone: Bahamas, Canada, Haiti, Jamaica, Cayman Islands, Mexico, Panama, Turks & Caicos Is, United States
Principal Cities: The largest city in the EST 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: HNE - Heure Normale de l'Est
Spanish: ET - Tiempo del Este, ET - Zona Sureste
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).
Start: Eastern Standard Time (EST) started on Sunday, November 2, 2025 at 2:00 am local time and clocks were set one hour back to Sunday, November 2, 2025, 1:00 am. Standard time starts annually on the first Sunday of November.
End: Eastern Standard Time (EST) ends on Sunday, March 8, 2026 at 2:00 am local time and clocks are set one hour forward to Sunday, March 8, 2026, 3:00 am local daylight time instead. Standard time ends annually on the second Sunday of March.
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 an offset of five hours 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
Korea Standard Time
Offset: KST is 9 hours ahead Greenwich Mean Time (GMT) and is used in Asia
Countries using this time zone: Korea (North), Korea (South)
Principal Cities: The largest city in the KST time zone is Seoul in South Korea, with about 10.349 million people. Other major cities in this time zone include Busan, Pyongyang, Incheon, Daegu.
Daylight Saving: Clocks in Korea Standard Time (KST) do not change for daylight saving time, so KST stays the same throughout the year. Other time zones may set clocks forward in summer and back in winter.
KST 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 an offset of nine hours to the east of the zero meridian.
- India - Military abbreviation for KST
- I - short form of 'India'
- Asia/Pyongyang
- Asia/Seoul
- ROK
- Korea Standard Time - UTC +9
- Pyongyang Time - UTC +8:30
- 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
Hong Kong Time
Offset: HKT is 8 hours ahead Greenwich Mean Time (GMT) and is used in Asia
Countries using this time zone: Hong Kong
Principal Cities: The largest city in the HKT time zone is Hong Kong in Hong Kong, with about 7.013 million people. Other major cities in this time zone include Kowloon, Tsuen Wan, Yuen Long Kau Hui, Sha Tin.
Daylight Saving: Clocks in Hong Kong Time (HKT) do not change for daylight saving time, so HKT stays the same throughout the year. Other time zones may set clocks forward in summer and back in winter.
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 an offset of eight hours 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