IST to EST to London, United Kingdom to PST to CST
Time Difference
India Standard Time is 9 hours and 30 minutes ahead of Eastern Daylight Time and 4 hours and 30 minutes ahead of BST (British Summer Time) and 12 hours and 30 minutes ahead of Pacific Daylight Time and 10 hours and 30 minutes ahead of Central Daylight Time
9:00 pm21:00 in IST is 11:30 am11:30 in EDT and is 4:30 pm16:30 in London, United Kingdom and is 8:30 am08:30 in PDT and is 10:30 am10:30 in CDT
IST to EST call time
Best time for a conference call or a meeting is between 6pm-8pm in IST which corresponds to 7:30am-9:30am in EST
IST to London call time
Best time for a conference call or a meeting is between 12:30pm-6pm in IST which corresponds to 8am-1:30pm in London
IST to PST call time
Best time for a conference call or a meeting is between 7:30pm-9:30pm in IST which corresponds to 6am-8am in PST
IST to CST call time
Best time for a conference call or a meeting is between 6:30pm-8:30pm in IST which corresponds to 7am-9am in CST
9:00 pm21:00 India Standard Time (IST). Offset UTC +5:30 hours
11:30 am11:30 Eastern Daylight Time (EDT). Offset UTC -4:00 hours
4:30 pm16:30 BST (British Summer Time) (London, United Kingdom). Offset UTC +1:00 hour
8:30 am08:30 Pacific Daylight Time (PDT). Offset UTC -7:00 hours
10:30 am10:30 Central Daylight Time (CDT). Offset UTC -5:00 hours
9:00 pm21:00 IST / 11:30 am11:30 EDT / 4:30 pm16:30 London, United Kingdom / 8:30 am08:30 PDT / 10:30 am10:30 CDT
| IST | EDT | London, United Kingdom | PDT | CDT |
|---|---|---|---|---|
| 12am (midnight) | 2:30 pm | 7:30 pm | 11:30 am | 1:30 pm |
| 1am | 3:30 pm | 8:30 pm | 12:30 pm | 2:30 pm |
| 2am | 4:30 pm | 9:30 pm | 1:30 pm | 3:30 pm |
| 3am | 5:30 pm | 10:30 pm | 2:30 pm | 4:30 pm |
| 4am | 6:30 pm | 11:30 pm | 3:30 pm | 5:30 pm |
| 5am | 7:30 pm | 12:30 am | 4:30 pm | 6:30 pm |
| 6am | 8:30 pm | 1:30 am | 5:30 pm | 7:30 pm |
| 7am | 9:30 pm | 2:30 am | 6:30 pm | 8:30 pm |
| 8am | 10:30 pm | 3:30 am | 7:30 pm | 9:30 pm |
| 9am | 11:30 pm | 4:30 am | 8:30 pm | 10:30 pm |
| 10am | 12:30 am | 5:30 am | 9:30 pm | 11:30 pm |
| 11am | 1:30 am | 6:30 am | 10:30 pm | 12:30 am |
| 12pm (noon) | 2:30 am | 7:30 am | 11:30 pm | 1:30 am |
| 1pm | 3:30 am | 8:30 am | 12:30 am | 2:30 am |
| 2pm | 4:30 am | 9:30 am | 1:30 am | 3:30 am |
| 3pm | 5:30 am | 10:30 am | 2:30 am | 4:30 am |
| 4pm | 6:30 am | 11:30 am | 3:30 am | 5:30 am |
| 5pm | 7:30 am | 12:30 pm | 4:30 am | 6:30 am |
| 6pm | 8:30 am | 1:30 pm | 5:30 am | 7:30 am |
| 7pm | 9:30 am | 2:30 pm | 6:30 am | 8:30 am |
| 8pm | 10:30 am | 3:30 pm | 7:30 am | 9:30 am |
| 9pm | 11:30 am | 4:30 pm | 8:30 am | 10:30 am |
| 10pm | 12:30 pm | 5:30 pm | 9:30 am | 11:30 am |
| 11pm | 1:30 pm | 6:30 pm | 10:30 am | 12:30 pm |
| 0:00 | 14:30 | 19:30 | 11:30 | 13:30 |
| 1:00 | 15:30 | 20:30 | 12:30 | 14:30 |
| 2:00 | 16:30 | 21:30 | 13:30 | 15:30 |
| 3:00 | 17:30 | 22:30 | 14:30 | 16:30 |
| 4:00 | 18:30 | 23:30 | 15:30 | 17:30 |
| 5:00 | 19:30 | 0:30 | 16:30 | 18:30 |
| 6:00 | 20:30 | 1:30 | 17:30 | 19:30 |
| 7:00 | 21:30 | 2:30 | 18:30 | 20:30 |
| 8:00 | 22:30 | 3:30 | 19:30 | 21:30 |
| 9:00 | 23:30 | 4:30 | 20:30 | 22:30 |
| 10:00 | 0:30 | 5:30 | 21:30 | 23:30 |
| 11:00 | 1:30 | 6:30 | 22:30 | 0:30 |
| 12:00 | 2:30 | 7:30 | 23:30 | 1:30 |
| 13:00 | 3:30 | 8:30 | 0:30 | 2:30 |
| 14:00 | 4:30 | 9:30 | 1:30 | 3:30 |
| 15:00 | 5:30 | 10:30 | 2:30 | 4:30 |
| 16:00 | 6:30 | 11:30 | 3:30 | 5:30 |
| 17:00 | 7:30 | 12:30 | 4:30 | 6:30 |
| 18:00 | 8:30 | 13:30 | 5:30 | 7:30 |
| 19:00 | 9:30 | 14:30 | 6:30 | 8:30 |
| 20:00 | 10:30 | 15:30 | 7:30 | 9:30 |
| 21:00 | 11:30 | 16:30 | 8:30 | 10:30 |
| 22:00 | 12:30 | 17:30 | 9:30 | 11:30 |
| 23:00 | 13:30 | 18:30 | 10:30 | 12:30 |
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
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
London Information
Time Zone
London Facts
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
French: HNP - Heure Normale du Pacifique
Spanish: PT - Tiempo del Pacífico, PT - Zona Noroeste
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 Pacific Daylight Time (PDT).
End: Pacific Standard Time (PST) 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: Pacific Standard Time (PST) 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.
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 eight hour and zero minutes time differences 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
- Peru Standard Time - UTC -5
- AKDT - Alaska Daylight Time
- PST - Pacific Standard Time
- PT - Pacific Time
- PST - Pitcairn Standard Time
- U - Uniform Time Zone
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 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: Central Standard Time (CST) 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.
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