PST to UTC to JST to GMT
Compare PST time with UTC, JST, and GMT time, including current local time, UTC offsets, time difference, daylight saving changes, working hours, and shareable meeting times.
Time Difference
Pacific Standard Time is 8 hours behind Universal Time Coordinated and 17 hours behind Japan Standard Time and 8 hours behind Greenwich Mean Time
4:00 am04:00 in PST is 12:00 pm12:00 in UTC and is 9:00 pm21:00 in JST and is 12:00 pm12:00 in GMT
PST to UTC call time
Best time for a conference call or a meeting is between 8:30am-9:30am in PST which corresponds to 4:30pm-5:30pm in UTC
PST to JST call time
Best time for a conference call or a meeting is between 4pm-5pm in PST which corresponds to 9am-10am in JST (next day)
PST to GMT call time
Best time for a conference call or a meeting is between 8:30am-9:30am in PST which corresponds to 4:30pm-5:30pm in GMT
4:00 am04:00 Pacific Standard Time (PST). Offset UTC -8:00 hours
12:00 pm12:00 Universal Time Coordinated (UTC). Offset UTC 0:00 hours
9:00 pm21:00 Japan Standard Time (JST). Offset UTC +9:00 hours
12:00 pm12:00 Greenwich Mean Time (GMT). Offset UTC 0:00 hours
4:00 am04:00 PST / 12:00 pm12:00 UTC / 9:00 pm21:00 JST / 12:00 pm12:00 GMT
| PST | UTC | JST | GMT |
|---|---|---|---|
| 12am (midnight) | 8am | 5pm | 8am |
| 1am | 9am | 6pm | 9am |
| 2am | 10am | 7pm | 10am |
| 3am | 11am | 8pm | 11am |
| 4am | 12pm (noon) | 9pm | 12pm (noon) |
| 5am | 1pm | 10pm | 1pm |
| 6am | 2pm | 11pm | 2pm |
| 7am | 3pm | 12am (midnight) | 3pm |
| 8am | 4pm | 1am | 4pm |
| 9am | 5pm | 2am | 5pm |
| 10am | 6pm | 3am | 6pm |
| 11am | 7pm | 4am | 7pm |
| 12pm (noon) | 8pm | 5am | 8pm |
| 1pm | 9pm | 6am | 9pm |
| 2pm | 10pm | 7am | 10pm |
| 3pm | 11pm | 8am | 11pm |
| 4pm | 12am (midnight) | 9am | 12am (midnight) |
| 5pm | 1am | 10am | 1am |
| 6pm | 2am | 11am | 2am |
| 7pm | 3am | 12pm (noon) | 3am |
| 8pm | 4am | 1pm | 4am |
| 9pm | 5am | 2pm | 5am |
| 10pm | 6am | 3pm | 6am |
| 11pm | 7am | 4pm | 7am |
| 00:00 | 08:00 | 17:00 | 08:00 |
| 01:00 | 09:00 | 18:00 | 09:00 |
| 02:00 | 10:00 | 19:00 | 10:00 |
| 03:00 | 11:00 | 20:00 | 11:00 |
| 04:00 | 12:00 | 21:00 | 12:00 |
| 05:00 | 13:00 | 22:00 | 13:00 |
| 06:00 | 14:00 | 23:00 | 14:00 |
| 07:00 | 15:00 | 00:00 | 15:00 |
| 08:00 | 16:00 | 01:00 | 16:00 |
| 09:00 | 17:00 | 02:00 | 17:00 |
| 10:00 | 18:00 | 03:00 | 18:00 |
| 11:00 | 19:00 | 04:00 | 19:00 |
| 12:00 | 20:00 | 05:00 | 20:00 |
| 13:00 | 21:00 | 06:00 | 21:00 |
| 14:00 | 22:00 | 07:00 | 22:00 |
| 15:00 | 23:00 | 08:00 | 23:00 |
| 16:00 | 00:00 | 09:00 | 00:00 |
| 17:00 | 01:00 | 10:00 | 01:00 |
| 18:00 | 02:00 | 11:00 | 02:00 |
| 19:00 | 03:00 | 12:00 | 03:00 |
| 20:00 | 04:00 | 13:00 | 04:00 |
| 21:00 | 05:00 | 14:00 | 05:00 |
| 22:00 | 06:00 | 15:00 | 06:00 |
| 23:00 | 07:00 | 16:00 | 07:00 |
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
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 the zero UTC/GMT offset.
- 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
Japan Standard Time
Offset: JST is 9 hours ahead Greenwich Mean Time (GMT) and is used in Asia
Countries using this time zone: Japan
Principal Cities: The largest city in the JST time zone is Tokyo in Japan, with about 8.337 million people. Other major cities in this time zone include Yokohama, Osaka shi, Nagoya shi, Sapporo.
Daylight Saving: Clocks in Japan Standard Time (JST) do not change for daylight saving time, so JST stays the same throughout the year. Other time zones may set clocks forward in summer and back in winter.
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 an offset of nine hours 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
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