JST
Japan Standard Time
GMT +9
UTC
Universal Time Coordinated
GMT +0
EDT/EST
Eastern Daylight Time
GMT -4
EST automatically adjusted to EDT time zone, that is in use
PDT/PST
Pacific Daylight Time
GMT -7
PST automatically adjusted to PDT time zone, that is in use
EEST/EET
Eastern European Summer Time
GMT +3
EET automatically adjusted to EEST time zone, that is in use

Time Difference

Japan Standard Time is 9 hours ahead of Universal Time Coordinated and 13 hours ahead of Eastern Daylight Time and 16 hours ahead of Pacific Daylight Time and 6 hours ahead of Eastern European Summer Time
9:30 am09:30 in JST is 12:30 am00:30 in UTC and is 8:30 pm20:30 in EDT and is 5:30 pm17:30 in PDT and is 3:30 am03:30 in EEST

JST to UTC call time
Best time for a conference call or a meeting is between 5pm-7pm in JST which corresponds to 8am-10am in UTC
JST to EST call time
Best time for a conference call or a meeting is between 8pm-10pm in JST which corresponds to 6am-8am in EST
JST to PST call time
Best time for a conference call or a meeting is between 9:30pm-11:30pm in JST which corresponds to 4:30am-6:30am in PST
JST to EET call time
Best time for a conference call or a meeting is between 3pm-6pm in JST which corresponds to 8am-11am in EET

9:30 am09:30 Japan Standard Time (JST). Offset UTC +9:00 hours
12:30 am00:30 Universal Time Coordinated (UTC). Offset UTC 0:00 hours
8:30 pm20:30 Eastern Daylight Time (EDT). Offset UTC -4:00 hours
5:30 pm17:30 Pacific Daylight Time (PDT). Offset UTC -7:00 hours
3:30 am03:30 Eastern European Summer Time (EEST). Offset UTC +3:00 hours

9:30 am09:30 JST / 12:30 am00:30 UTC / 8:30 pm20:30 EDT / 5:30 pm17:30 PDT / 3:30 am03:30 EEST

JST UTC EDT PDT EEST
12am (midnight) 3pm 11am 8am 6pm
1am 4pm 12pm (noon) 9am 7pm
2am 5pm 1pm 10am 8pm
3am 6pm 2pm 11am 9pm
4am 7pm 3pm 12pm (noon) 10pm
5am 8pm 4pm 1pm 11pm
6am 9pm 5pm 2pm 12am (midnight)
7am 10pm 6pm 3pm 1am
8am 11pm 7pm 4pm 2am
9am 12am (midnight) 8pm 5pm 3am
10am 1am 9pm 6pm 4am
11am 2am 10pm 7pm 5am
12pm (noon) 3am 11pm 8pm 6am
1pm 4am 12am (midnight) 9pm 7am
2pm 5am 1am 10pm 8am
3pm 6am 2am 11pm 9am
4pm 7am 3am 12am (midnight) 10am
5pm 8am 4am 1am 11am
6pm 9am 5am 2am 12pm (noon)
7pm 10am 6am 3am 1pm
8pm 11am 7am 4am 2pm
9pm 12pm (noon) 8am 5am 3pm
10pm 1pm 9am 6am 4pm
11pm 2pm 10am 7am 5pm
0:00 15:00 11:00 8:00 18:00
1:00 16:00 12:00 9:00 19:00
2:00 17:00 13:00 10:00 20:00
3:00 18:00 14:00 11:00 21:00
4:00 19:00 15:00 12:00 22:00
5:00 20:00 16:00 13:00 23:00
6:00 21:00 17:00 14:00 0:00
7:00 22:00 18:00 15:00 1:00
8:00 23:00 19:00 16:00 2:00
9:00 0:00 20:00 17:00 3:00
10:00 1:00 21:00 18:00 4:00
11:00 2:00 22:00 19:00 5:00
12:00 3:00 23:00 20:00 6:00
13:00 4:00 0:00 21:00 7:00
14:00 5:00 1:00 22:00 8:00
15:00 6:00 2:00 23:00 9:00
16:00 7:00 3:00 0:00 10:00
17:00 8:00 4:00 1:00 11:00
18:00 9:00 5:00 2:00 12:00
19:00 10:00 6:00 3:00 13:00
20:00 11:00 7:00 4:00 14:00
21:00 12:00 8:00 5:00 15:00
22:00 13:00 9:00 6:00 16:00
23:00 14:00 10:00 7:00 17:00

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 Time Zone Geo Map
JST timezone map

JST representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • +09 - basic short
  • +0900 - basic
  • +09:00 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • +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.
Military/NATO: Used by the U.S. military, Chinese military and others
  • India - Military abbreviation for JST
  • I - short form of 'India'
IANA/Olson: Reflects JST time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
  • Asia/Tokyo
  • Japan
Time zones with the GMT +9 offset:
  • 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
  • +09 -

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

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 zero hour and zero minutes time differences of the zero meridian.
Military/NATO: Used by the U.S. military, Chinese military and others
  • Zulu - Military abbreviation for UTC
  • Z - short form of 'Zulu'
IANA/Olson: Reflects UTC time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
  • Etc/UCT
  • Etc/UTC
  • Etc/Universal
  • Etc/Zulu
  • UCT
  • UTC
  • Universal
  • Zulu
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 - 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

Daylight Saving: This is a standard timezone, however during summer some places adjust time for one hour forward for daylight saving and observe Eastern Daylight Time (EDT).

End: EST ended and clocks were set one hour forward on Sunday, 14 March 2021, at 2:00 (2:00 am) local time.

Start: EST starts and clocks are set one hour back on Sunday, 07 November 2021, at 2:00 (2:00 am) local time.

French: HNE - Heure Normale de l'Est

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

EST Time Zone Geo Map
EST timezone map

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 five hour and zero minutes time differences 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
  • -05 -

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

Daylight Saving: This is a standard timezone, however during summer some places adjust time for one hour forward for daylight saving and observe Pacific Daylight Time (PDT).

End: PST ended and clocks were set one hour forward on Sunday, 14 March 2021, at 2:00 (2:00 am) local time.

Start: PST starts and clocks are set one hour back on Sunday, 07 November 2021, at 2:00 (2:00 am) local time.

French: HNP - Heure Normale du Pacifique

Spanish: PT - Tiempo del Pacífico, PT - Zona Noroeste

PST Time Zone Geo Map
PST timezone map

PST representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • -08 - basic short
  • -0800 - basic
  • -08:00 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • -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.
Military/NATO: Used by the U.S. military, Chinese military and others
  • Uniform - Military abbreviation for PST
  • U - short form of 'Uniform'
IANA/Olson: Reflects PST 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
  • US/Pacific-New
PST Abbreviation: Several time zones share PST abbreviation and it could refer to these time zones
  • Pacific Standard Time - UTC -8
  • Pitcairn Standard Time - UTC -8
Time zones with the GMT -8 offset:
  • AKDT - Alaska Daylight Time
  • PST - Pacific Standard Time
  • PT - Pacific Time
  • YDT - Yukon Daylight Time
  • PST - Pitcairn Standard Time
  • U - Uniform Time Zone

Eastern European Time

Offset: EET is 2 hours ahead Greenwich Mean Time (GMT) and is used in Europe

Countries: It is used in following countries: Åland Islands, Bulgaria, Cyprus, Estonia, Egypt, Finland, Greece, Jordan, Lebanon, Lithuania, Latvia, Libya, Moldova, Palestine, Romania, Russia, Syria, Ukraine

Principal Cities: The largest city in the EET timezone is Cairo from Egypt with population about 7.735 million people. Other major cities in the area are Alexandria, Kiev, Al Jizah, Beirut

Daylight Saving: This is a standard timezone, however during summer some places adjust time for one hour forward for daylight saving and observe Eastern European Summer Time (EEST).

End: EET ended and clocks were set one hour forward on Sunday, 28 March 2021, at 3:00 (3:00 am) local time.

Start: EET starts and clocks are set one hour back on Sunday, 31 October 2021, at 4:00 (4:00 am) local time.

German: OEZ - Osteuropäische Zeit

EET Time Zone Geo Map
EET timezone map

EET representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • +02 - basic short
  • +0200 - basic
  • +02:00 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • +0200 - sign character (+) followed by a four digit time providing hours (02) and minutes (00) of the offset. Indicates two hour and zero minutes time differences to the east of the zero meridian.
Military/NATO: Used by the U.S. military, Chinese military and others
  • Bravo - Military abbreviation for EET
  • B - short form of 'Bravo'
IANA/Olson: Reflects EET time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
  • Africa/Cairo
  • Africa/Tripoli
  • Asia/Amman
  • Asia/Beirut
  • Asia/Damascus
  • Asia/Famagusta
  • Asia/Gaza
  • Asia/Hebron
  • Asia/Nicosia
  • EET
  • Egypt
  • Europe/Athens
  • Europe/Bucharest
  • Europe/Chisinau
  • Europe/Helsinki
  • Europe/Kaliningrad
  • Europe/Kiev
  • Europe/Mariehamn
  • Europe/Nicosia
  • Europe/Riga
  • Europe/Sofia
  • Europe/Tallinn
  • Europe/Tiraspol
  • Europe/Uzhgorod
  • Europe/Vilnius
  • Europe/Zaporozhye
  • Libya
Time zones with the GMT +2 offset:
  • CEST - Central European Summer Time
  • EET - Eastern European Time
  • MESZ - Mitteleuropäische Sommerzeit
  • B - Bravo Time Zone
  • CAT - Central Africa Time
  • IST - Israel Standard Time
  • SAST - South Africa Standard Time
  • WAST - West Africa Summer Time