JST to WAT to EST
Time Difference
Japan Standard Time is 8 hours ahead of West Africa Time and 13 hours ahead of Eastern Daylight Time
12:00 pm12:00 in JST is 4:00 am04:00 in WAT and is 11:00 pm23:00 in EDT
JST to WAT call time
Best time for a conference call or a meeting is between 4pm-6pm in JST which corresponds to 8am-10am in WAT
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
12:00 pm12:00 Japan Standard Time (JST). Offset UTC +9:00 hours
4:00 am04:00 West Africa Time (WAT). Offset UTC +1:00 hour
11:00 pm23:00 Eastern Daylight Time (EDT). Offset UTC -4:00 hours
12:00 pm12:00 JST / 4:00 am04:00 WAT / 11:00 pm23:00 EDT
| JST | WAT | EDT |
|---|---|---|
| 12am (midnight) | 4pm | 11am |
| 1am | 5pm | 12pm (noon) |
| 2am | 6pm | 1pm |
| 3am | 7pm | 2pm |
| 4am | 8pm | 3pm |
| 5am | 9pm | 4pm |
| 6am | 10pm | 5pm |
| 7am | 11pm | 6pm |
| 8am | 12am (midnight) | 7pm |
| 9am | 1am | 8pm |
| 10am | 2am | 9pm |
| 11am | 3am | 10pm |
| 12pm (noon) | 4am | 11pm |
| 1pm | 5am | 12am (midnight) |
| 2pm | 6am | 1am |
| 3pm | 7am | 2am |
| 4pm | 8am | 3am |
| 5pm | 9am | 4am |
| 6pm | 10am | 5am |
| 7pm | 11am | 6am |
| 8pm | 12pm (noon) | 7am |
| 9pm | 1pm | 8am |
| 10pm | 2pm | 9am |
| 11pm | 3pm | 10am |
| 0:00 | 16:00 | 11:00 |
| 1:00 | 17:00 | 12:00 |
| 2:00 | 18:00 | 13:00 |
| 3:00 | 19:00 | 14:00 |
| 4:00 | 20:00 | 15:00 |
| 5:00 | 21:00 | 16:00 |
| 6:00 | 22:00 | 17:00 |
| 7:00 | 23:00 | 18:00 |
| 8:00 | 0:00 | 19:00 |
| 9:00 | 1:00 | 20:00 |
| 10:00 | 2:00 | 21:00 |
| 11:00 | 3:00 | 22:00 |
| 12:00 | 4:00 | 23:00 |
| 13:00 | 5:00 | 0:00 |
| 14:00 | 6:00 | 1:00 |
| 15:00 | 7:00 | 2:00 |
| 16:00 | 8:00 | 3:00 |
| 17:00 | 9:00 | 4:00 |
| 18:00 | 10:00 | 5:00 |
| 19:00 | 11:00 | 6:00 |
| 20:00 | 12:00 | 7:00 |
| 21:00 | 13:00 | 8:00 |
| 22:00 | 14:00 | 9:00 |
| 23:00 | 15:00 | 10:00 |
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 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
West Africa Time
Offset: WAT is 1 hour ahead Greenwich Mean Time (GMT) and is used in Africa
Countries: It is used in following countries: Angola, Benin, Congo (Dem. Rep.), Central African Rep., Congo (Rep.), Cameroon, Gabon, Equatorial Guinea, Niger, Nigeria, Chad
Principal Cities: The largest city in the WAT timezone is Lagos from Nigeria with population about 9 million people. Other major cities in the area are Kinshasa, Kano, Ibadan, Luanda
Daylight Saving: West Africa Time (WAT) is not adjusted for daylight saving therefore WAT 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, West Africa Time remains the same
WAT representations, usage and related time zones
- +01 - basic short
- +0100 - basic
- +01:00 - extended
- +0100 - sign character (+) followed by a four digit time providing hours (01) and minutes (00) of the offset. Indicates one hour and zero minutes time differences to the east of the zero meridian.
- Alpha - Military abbreviation for WAT
- A - short form of 'Alpha'
- Africa/Bangui
- Africa/Brazzaville
- Africa/Douala
- Africa/Kinshasa
- Africa/Lagos
- Africa/Libreville
- Africa/Luanda
- Africa/Malabo
- Africa/Ndjamena
- Africa/Niamey
- Africa/Porto-Novo
- BST - British Summer Time
- CET - Central European Time
- IST - Irish Standard Time
- WEST - Western European Summer Time
- A - Alpha Time Zone
- CET - Central European Time
- MEZ - Mitteleuropäische Zeit
- WAT - West Africa Time
- WST - Western Sahara Summer Time
- BMT - Biel Mean 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 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