EST to MST to IST
Time Difference
Eastern Daylight Time is 2 hours ahead of Mountain Daylight Time and 9 hours and 30 minutes behind India Standard Time
12:00 pm12:00 in EDT is 10:00 am10:00 in MDT and is 9:30 pm21:30 in IST
EST to MST call time
Best time for a conference call or a meeting is between 10am-6pm in EST which corresponds to 8am-4pm in MST
EST to IST call time
Best time for a conference call or a meeting is between 7:30am-9:30am in EST which corresponds to 6pm-8pm in IST
12:00 pm12:00 Eastern Daylight Time (EDT). Offset UTC -4:00 hours
10:00 am10:00 Mountain Daylight Time (MDT). Offset UTC -6:00 hours
9:30 pm21:30 India Standard Time (IST). Offset UTC +5:30 hours
12:00 pm12:00 EDT / 10:00 am10:00 MDT / 9:30 pm21:30 IST
| EDT | MDT | IST |
|---|---|---|
| 12am (midnight) | 10pm | 9:30 am |
| 1am | 11pm | 10:30 am |
| 2am | 12am (midnight) | 11:30 am |
| 3am | 1am | 12:30 pm |
| 4am | 2am | 1:30 pm |
| 5am | 3am | 2:30 pm |
| 6am | 4am | 3:30 pm |
| 7am | 5am | 4:30 pm |
| 8am | 6am | 5:30 pm |
| 9am | 7am | 6:30 pm |
| 10am | 8am | 7:30 pm |
| 11am | 9am | 8:30 pm |
| 12pm (noon) | 10am | 9:30 pm |
| 1pm | 11am | 10:30 pm |
| 2pm | 12pm (noon) | 11:30 pm |
| 3pm | 1pm | 12:30 am |
| 4pm | 2pm | 1:30 am |
| 5pm | 3pm | 2:30 am |
| 6pm | 4pm | 3:30 am |
| 7pm | 5pm | 4:30 am |
| 8pm | 6pm | 5:30 am |
| 9pm | 7pm | 6:30 am |
| 10pm | 8pm | 7:30 am |
| 11pm | 9pm | 8:30 am |
| 0:00 | 22:00 | 9:30 |
| 1:00 | 23:00 | 10:30 |
| 2:00 | 0:00 | 11:30 |
| 3:00 | 1:00 | 12:30 |
| 4:00 | 2:00 | 13:30 |
| 5:00 | 3:00 | 14:30 |
| 6:00 | 4:00 | 15:30 |
| 7:00 | 5:00 | 16:30 |
| 8:00 | 6:00 | 17:30 |
| 9:00 | 7:00 | 18:30 |
| 10:00 | 8:00 | 19:30 |
| 11:00 | 9:00 | 20:30 |
| 12:00 | 10:00 | 21:30 |
| 13:00 | 11:00 | 22:30 |
| 14:00 | 12:00 | 23:30 |
| 15:00 | 13:00 | 0:30 |
| 16:00 | 14:00 | 1:30 |
| 17:00 | 15:00 | 2:30 |
| 18:00 | 16:00 | 3:30 |
| 19:00 | 17:00 | 4:30 |
| 20:00 | 18:00 | 5:30 |
| 21:00 | 19:00 | 6:30 |
| 22:00 | 20:00 | 7:30 |
| 23:00 | 21:00 | 8:30 |
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 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
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
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