JST to IST to CST to EST to UTC
Time Difference
Japan Standard Time is 3 hours and 30 minutes ahead of India Standard Time and 14 hours ahead of Central Daylight Time and 13 hours ahead of Eastern Daylight Time and 9 hours ahead of Universal Time Coordinated
3:30 pm15:30 in JST is 12:00 pm12:00 in IST and is 1:30 am01:30 in CDT and is 2:30 am02:30 in EDT and is 6:30 am06:30 in UTC
JST to IST call time
Best time for a conference call or a meeting is between 11:30am-6pm in JST which corresponds to 8am-2:30pm in IST
JST to CST call time
Best time for a conference call or a meeting is between 8:30pm-10:30pm in JST which corresponds to 5:30am-7:30am in CST
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 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
3:30 pm15:30 Japan Standard Time (JST). Offset UTC +9:00 hours
12:00 pm12:00 India Standard Time (IST). Offset UTC +5:30 hours
1:30 am01:30 Central Daylight Time (CDT). Offset UTC -5:00 hours
2:30 am02:30 Eastern Daylight Time (EDT). Offset UTC -4:00 hours
6:30 am06:30 Universal Time Coordinated (UTC). Offset UTC 0:00 hours
3:30 pm15:30 JST / 12:00 pm12:00 IST / 1:30 am01:30 CDT / 2:30 am02:30 EDT / 6:30 am06:30 UTC
| JST | IST | CDT | EDT | UTC |
|---|---|---|---|---|
| 12am (midnight) | 8:30 pm | 10am | 11am | 3pm |
| 1am | 9:30 pm | 11am | 12pm (noon) | 4pm |
| 2am | 10:30 pm | 12pm (noon) | 1pm | 5pm |
| 3am | 11:30 pm | 1pm | 2pm | 6pm |
| 4am | 12:30 am | 2pm | 3pm | 7pm |
| 5am | 1:30 am | 3pm | 4pm | 8pm |
| 6am | 2:30 am | 4pm | 5pm | 9pm |
| 7am | 3:30 am | 5pm | 6pm | 10pm |
| 8am | 4:30 am | 6pm | 7pm | 11pm |
| 9am | 5:30 am | 7pm | 8pm | 12am (midnight) |
| 10am | 6:30 am | 8pm | 9pm | 1am |
| 11am | 7:30 am | 9pm | 10pm | 2am |
| 12pm (noon) | 8:30 am | 10pm | 11pm | 3am |
| 1pm | 9:30 am | 11pm | 12am (midnight) | 4am |
| 2pm | 10:30 am | 12am (midnight) | 1am | 5am |
| 3pm | 11:30 am | 1am | 2am | 6am |
| 4pm | 12:30 pm | 2am | 3am | 7am |
| 5pm | 1:30 pm | 3am | 4am | 8am |
| 6pm | 2:30 pm | 4am | 5am | 9am |
| 7pm | 3:30 pm | 5am | 6am | 10am |
| 8pm | 4:30 pm | 6am | 7am | 11am |
| 9pm | 5:30 pm | 7am | 8am | 12pm (noon) |
| 10pm | 6:30 pm | 8am | 9am | 1pm |
| 11pm | 7:30 pm | 9am | 10am | 2pm |
| 0:00 | 20:30 | 10:00 | 11:00 | 15:00 |
| 1:00 | 21:30 | 11:00 | 12:00 | 16:00 |
| 2:00 | 22:30 | 12:00 | 13:00 | 17:00 |
| 3:00 | 23:30 | 13:00 | 14:00 | 18:00 |
| 4:00 | 0:30 | 14:00 | 15:00 | 19:00 |
| 5:00 | 1:30 | 15:00 | 16:00 | 20:00 |
| 6:00 | 2:30 | 16:00 | 17:00 | 21:00 |
| 7:00 | 3:30 | 17:00 | 18:00 | 22:00 |
| 8:00 | 4:30 | 18:00 | 19:00 | 23:00 |
| 9:00 | 5:30 | 19:00 | 20:00 | 0:00 |
| 10:00 | 6:30 | 20:00 | 21:00 | 1:00 |
| 11:00 | 7:30 | 21:00 | 22:00 | 2:00 |
| 12:00 | 8:30 | 22:00 | 23:00 | 3:00 |
| 13:00 | 9:30 | 23:00 | 0:00 | 4:00 |
| 14:00 | 10:30 | 0:00 | 1:00 | 5:00 |
| 15:00 | 11:30 | 1:00 | 2:00 | 6:00 |
| 16:00 | 12:30 | 2:00 | 3:00 | 7:00 |
| 17:00 | 13:30 | 3:00 | 4:00 | 8:00 |
| 18:00 | 14:30 | 4:00 | 5:00 | 9:00 |
| 19:00 | 15:30 | 5:00 | 6:00 | 10:00 |
| 20:00 | 16:30 | 6:00 | 7:00 | 11:00 |
| 21:00 | 17:30 | 7:00 | 8:00 | 12:00 |
| 22:00 | 18:30 | 8:00 | 9:00 | 13:00 |
| 23:00 | 19:30 | 9:00 | 10:00 | 14:00 |
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
India Standard Time
Offset: IST is 5 hours and 30 minutes ahead Greenwich Mean Time (GMT) and is used in Asia
Countries: It is used in following countries: India
Principal Cities: The largest city in the IST timezone is Mumbai from India with population about 12.692 million people. Other major cities in the area are Delhi, Bangalore, Kolkata, Chennai
Daylight Saving: India Standard Time (IST) is not adjusted for daylight saving therefore IST 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, India Standard Time remains the same
IST representations, usage and related time zones
- +0530 - basic
- +05:30 - extended
- +0530 - sign character (+) followed by a four digit time providing hours (05) and minutes (30) of the offset. Indicates five hour and thirty minutes time differences to the east of the zero meridian.
- Asia/Calcutta
- Asia/Kolkata
- India Standard Time - UTC +5:30
- Irish Standard Time - UTC +1
- Israel Standard Time - UTC +2
- Iran Standard Time - UTC +3:30
Central Standard Time
Offset: CST is 6 hours behind Greenwich Mean Time (GMT) and is used in North America
Countries: It is used in following countries: Belize, Canada, Costa Rica, Guatemala, Honduras, Mexico, Nicaragua, El Salvador, United States
Principal Cities: The largest city in the CST timezone is Mexico City from Mexico with population about 12.294 million people. Other major cities in the area are Chicago, Houston, Iztapalapa, Ecatepec
French: HNC - Heure Normale du Centre
Spanish: CT - Tiempo Central Estándar, CT - Zona Centro
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 Central Daylight Time (CDT).
End: Central Standard Time (CST) 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: Central Standard Time (CST) 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.
CST representations, usage and related time zones
- -06 - basic short
- -0600 - basic
- -06:00 - extended
- -0600 - sign character (-) followed by a four digit time providing hours (06) and minutes (00) of the offset. Indicates six hour and zero minutes time differences to the west of the zero meridian.
- Sierra - Military abbreviation for CST
- S - short form of 'Sierra'
- America/Bahia_Banderas
- America/Belize
- America/Chicago
- America/Chihuahua
- America/Costa_Rica
- America/El_Salvador
- America/Guatemala
- America/Indiana/Knox
- America/Indiana/Tell_City
- America/Knox_IN
- America/Managua
- America/Matamoros
- America/Menominee
- America/Merida
- America/Mexico_City
- America/Monterrey
- America/North_Dakota/Beulah
- America/North_Dakota/Center
- America/North_Dakota/New_Salem
- America/Ojinaga
- America/Rainy_River
- America/Rankin_Inlet
- America/Regina
- America/Resolute
- America/Swift_Current
- America/Tegucigalpa
- America/Winnipeg
- CST6CDT
- Canada/Central
- Canada/Saskatchewan
- Mexico/General
- US/Central
- US/Indiana-Starke
- Central Standard Time - UTC -6
- China Standard Time - UTC +8
- Cuba Standard Time - UTC -5
- Colombia Standard Time - UTC -5
- CST - Central Standard Time
- CT - Central Time
- MDT - Mountain Daylight Time
- EAST - Easter Island Standard Time
- GALT - Galapagos Time
- S - Sierra 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
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
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 zero hour and zero minutes time differences of the zero meridian.
- 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