IST to EDT to CST to PST to MST
Time Difference
India Standard Time is 9 hours and 30 minutes ahead of Eastern Daylight Time and 10 hours and 30 minutes ahead of Central Daylight Time and 12 hours and 30 minutes ahead of Pacific Daylight Time and 11 hours and 30 minutes ahead of Mountain Daylight Time
6:30 pm18:30 in IST is 9:00 am09:00 in EDT and is 8:00 am08:00 in CDT and is 6:00 am06:00 in PDT and is 7:00 am07:00 in MDT
IST to EDT call time
Best time for a conference call or a meeting is between 5:30pm-7:30pm in IST which corresponds to 8am-10am in EDT
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
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 MST call time
Best time for a conference call or a meeting is between 7pm-9pm in IST which corresponds to 6:30am-8:30am in MST
6:30 pm18:30 India Standard Time (IST). Offset UTC +5:30 hours
9:00 am09:00 Eastern Daylight Time (EDT). Offset UTC -4:00 hours
8:00 am08:00 Central Daylight Time (CDT). Offset UTC -5:00 hours
6:00 am06:00 Pacific Daylight Time (PDT). Offset UTC -7:00 hours
7:00 am07:00 Mountain Daylight Time (MDT). Offset UTC -6:00 hours
6:30 pm18:30 IST / 9:00 am09:00 EDT / 8:00 am08:00 CDT / 6:00 am06:00 PDT / 7:00 am07:00 MDT
| IST | EDT | CDT | PDT | MDT |
|---|---|---|---|---|
| 12am (midnight) | 2:30 pm | 1:30 pm | 11:30 am | 12:30 pm |
| 1am | 3:30 pm | 2:30 pm | 12:30 pm | 1:30 pm |
| 2am | 4:30 pm | 3:30 pm | 1:30 pm | 2:30 pm |
| 3am | 5:30 pm | 4:30 pm | 2:30 pm | 3:30 pm |
| 4am | 6:30 pm | 5:30 pm | 3:30 pm | 4:30 pm |
| 5am | 7:30 pm | 6:30 pm | 4:30 pm | 5:30 pm |
| 6am | 8:30 pm | 7:30 pm | 5:30 pm | 6:30 pm |
| 7am | 9:30 pm | 8:30 pm | 6:30 pm | 7:30 pm |
| 8am | 10:30 pm | 9:30 pm | 7:30 pm | 8:30 pm |
| 9am | 11:30 pm | 10:30 pm | 8:30 pm | 9:30 pm |
| 10am | 12:30 am | 11:30 pm | 9:30 pm | 10:30 pm |
| 11am | 1:30 am | 12:30 am | 10:30 pm | 11:30 pm |
| 12pm (noon) | 2:30 am | 1:30 am | 11:30 pm | 12:30 am |
| 1pm | 3:30 am | 2:30 am | 12:30 am | 1:30 am |
| 2pm | 4:30 am | 3:30 am | 1:30 am | 2:30 am |
| 3pm | 5:30 am | 4:30 am | 2:30 am | 3:30 am |
| 4pm | 6:30 am | 5:30 am | 3:30 am | 4:30 am |
| 5pm | 7:30 am | 6:30 am | 4:30 am | 5:30 am |
| 6pm | 8:30 am | 7:30 am | 5:30 am | 6:30 am |
| 7pm | 9:30 am | 8:30 am | 6:30 am | 7:30 am |
| 8pm | 10:30 am | 9:30 am | 7:30 am | 8:30 am |
| 9pm | 11:30 am | 10:30 am | 8:30 am | 9:30 am |
| 10pm | 12:30 pm | 11:30 am | 9:30 am | 10:30 am |
| 11pm | 1:30 pm | 12:30 pm | 10:30 am | 11:30 am |
| 0:00 | 14:30 | 13:30 | 11:30 | 12:30 |
| 1:00 | 15:30 | 14:30 | 12:30 | 13:30 |
| 2:00 | 16:30 | 15:30 | 13:30 | 14:30 |
| 3:00 | 17:30 | 16:30 | 14:30 | 15:30 |
| 4:00 | 18:30 | 17:30 | 15:30 | 16:30 |
| 5:00 | 19:30 | 18:30 | 16:30 | 17:30 |
| 6:00 | 20:30 | 19:30 | 17:30 | 18:30 |
| 7:00 | 21:30 | 20:30 | 18:30 | 19:30 |
| 8:00 | 22:30 | 21:30 | 19:30 | 20:30 |
| 9:00 | 23:30 | 22:30 | 20:30 | 21:30 |
| 10:00 | 0:30 | 23:30 | 21:30 | 22:30 |
| 11:00 | 1:30 | 0:30 | 22:30 | 23:30 |
| 12:00 | 2:30 | 1:30 | 23:30 | 0:30 |
| 13:00 | 3:30 | 2:30 | 0:30 | 1:30 |
| 14:00 | 4:30 | 3:30 | 1:30 | 2:30 |
| 15:00 | 5:30 | 4:30 | 2:30 | 3:30 |
| 16:00 | 6:30 | 5:30 | 3:30 | 4:30 |
| 17:00 | 7:30 | 6:30 | 4:30 | 5:30 |
| 18:00 | 8:30 | 7:30 | 5:30 | 6:30 |
| 19:00 | 9:30 | 8:30 | 6:30 | 7:30 |
| 20:00 | 10:30 | 9:30 | 7:30 | 8:30 |
| 21:00 | 11:30 | 10:30 | 8:30 | 9:30 |
| 22:00 | 12:30 | 11:30 | 9:30 | 10:30 |
| 23:00 | 13:30 | 12:30 | 10:30 | 11:30 |
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 Daylight Time
Offset: EDT is 4 hours behind Greenwich Mean Time (GMT) and is used in North America
Countries: It is used in following countries: Bahamas, Canada, Haiti, Turks & Caicos Is, United States
Principal Cities: The largest city in the EDT 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: HAE - Heure Avancée de l'Est
Spanish: EDT - Tiempo de verano del Este, ET - Zona Sureste
Daylight Saving: Eastern Daylight Time (EDT) is a daylight saving/summer timezone, however during winter some places switch clocks for one hour back and observe Eastern Standard Time (EST).
Start: Eastern Daylight Time (EDT) started 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. Daylight saving starts annually the on second Sunday of March
End: Eastern Daylight Time (EDT) ends 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 local standard time instead. Daylight saving ends annually the on first Sunday of November
EDT representations, usage and related time zones
- -04 - basic short
- -0400 - basic
- -04:00 - extended
- -0400 - sign character (-) followed by a four digit time providing hours (04) and minutes (00) of the offset. Indicates four hour and zero minutes time differences to the west of the zero meridian.
- Quebec - Military abbreviation for EDT
- Q - short form of 'Quebec'
- 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/Kentucky/Louisville
- America/Kentucky/Monticello
- America/Louisville
- America/Montreal
- America/Nassau
- America/New_York
- America/Nipigon
- America/Pangnirtung
- America/Port-au-Prince
- America/Thunder_Bay
- America/Toronto
- Canada/Eastern
- EST5EDT
- US/East-Indiana
- US/Eastern
- US/Michigan
- AST - Atlantic Standard Time
- EDT - Eastern Daylight Time
- AMT - Amazon Time
- BOT - Bolivia Time
- CDT - Cuba Daylight Time
- CLT - Chile Standard Time
- FKT - Falkland Island Time
- GYT - Guyana Time
- HLV - Hora Legal de Venezuela
- PYT - Paraguay Time
- Q - Quebec Time Zone
- VET - Venezuelan Standard Time
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
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 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: Pacific Standard Time (PST) 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.
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
Mountain Standard Time
Offset: MST is 7 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 MST timezone is Phoenix from USA with population about 1.446 million people. Other major cities in the area are Calgary, Edmonton, El Paso, Denver
French: HNR - Heure Normale des Rocheuses
Spanish: MT - Zona Pacífico
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 Mountain Daylight Time (MDT).
End: Mountain Standard Time (MST) 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: Mountain Standard Time (MST) 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.
MST representations, usage and related time zones
- -07 - basic short
- -0700 - basic
- -07:00 - extended
- -0700 - sign character (-) followed by a four digit time providing hours (07) and minutes (00) of the offset. Indicates seven hour and zero minutes time differences to the west of the zero meridian.
- Tango - Military abbreviation for MST
- T - short form of 'Tango'
- America/Boise
- America/Cambridge_Bay
- America/Ciudad_Juarez
- America/Creston
- America/Dawson
- America/Dawson_Creek
- America/Denver
- America/Edmonton
- America/Fort_Nelson
- America/Hermosillo
- America/Inuvik
- America/Mazatlan
- America/Phoenix
- America/Shiprock
- America/Whitehorse
- America/Yellowknife
- Canada/Mountain
- Canada/Yukon
- MST
- MST7MDT
- Mexico/BajaSur
- Navajo
- US/Arizona
- US/Mountain
- Mountain Standard Time - UTC -7
- Moscow Standard Time - UTC +3
- Mauritius Standard Time - UTC +4
- MST - Mountain Standard Time
- PDT - Pacific Daylight Time
- YST - Yukon Standard Time
- T - Tango Time Zone