GMT to JST to EST
Time Difference
Greenwich Mean Time is 9 hours behind Japan Standard Time and 4 hours ahead of Eastern Daylight Time
3:30 pm15:30 in GMT is 12:30 am00:30 in JST and is 11:30 am11:30 in EDT
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 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
3:30 pm15:30 Greenwich Mean Time (GMT). Offset UTC 0:00 hours
12:30 am00:30 Japan Standard Time (JST). Offset UTC +9:00 hours
11:30 am11:30 Eastern Daylight Time (EDT). Offset UTC -4:00 hours
3:30 pm15:30 GMT / 12:30 am00:30 JST / 11:30 am11:30 EDT
| GMT | JST | EDT |
|---|---|---|
| 12am (midnight) | 9am | 8pm |
| 1am | 10am | 9pm |
| 2am | 11am | 10pm |
| 3am | 12pm (noon) | 11pm |
| 4am | 1pm | 12am (midnight) |
| 5am | 2pm | 1am |
| 6am | 3pm | 2am |
| 7am | 4pm | 3am |
| 8am | 5pm | 4am |
| 9am | 6pm | 5am |
| 10am | 7pm | 6am |
| 11am | 8pm | 7am |
| 12pm (noon) | 9pm | 8am |
| 1pm | 10pm | 9am |
| 2pm | 11pm | 10am |
| 3pm | 12am (midnight) | 11am |
| 4pm | 1am | 12pm (noon) |
| 5pm | 2am | 1pm |
| 6pm | 3am | 2pm |
| 7pm | 4am | 3pm |
| 8pm | 5am | 4pm |
| 9pm | 6am | 5pm |
| 10pm | 7am | 6pm |
| 11pm | 8am | 7pm |
| 0:00 | 9:00 | 20:00 |
| 1:00 | 10:00 | 21:00 |
| 2:00 | 11:00 | 22:00 |
| 3:00 | 12:00 | 23:00 |
| 4:00 | 13:00 | 0:00 |
| 5:00 | 14:00 | 1:00 |
| 6:00 | 15:00 | 2:00 |
| 7:00 | 16:00 | 3:00 |
| 8:00 | 17:00 | 4:00 |
| 9:00 | 18:00 | 5:00 |
| 10:00 | 19:00 | 6:00 |
| 11:00 | 20:00 | 7:00 |
| 12:00 | 21:00 | 8:00 |
| 13:00 | 22:00 | 9:00 |
| 14:00 | 23:00 | 10:00 |
| 15:00 | 0:00 | 11:00 |
| 16:00 | 1:00 | 12:00 |
| 17:00 | 2:00 | 13:00 |
| 18:00 | 3:00 | 14:00 |
| 19:00 | 4:00 | 15:00 |
| 20:00 | 5:00 | 16:00 |
| 21:00 | 6:00 | 17:00 |
| 22:00 | 7:00 | 18:00 |
| 23:00 | 8:00 | 19:00 |
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+03:00 - UTC +3
- GMT+06:00 - UTC +6
- GMT - UTC +0
- 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
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
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 10, 2024 at 2:00 am local time and clocks were set one hour forward to Sunday, March 10, 2024, 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 3, 2024 at 2:00 am local time and clocks are set one hour back to Sunday, November 3, 2024, 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