IST to EST to NZDT to PT
Time Difference
India Standard Time is 9 hours and 30 minutes ahead of Eastern Daylight Time and 6 hours and 30 minutes behind New Zealand Standard Time and 12 hours and 30 minutes ahead of Pacific Daylight Time
4:00 am04:00 in IST is 6:30 pm18:30 in EDT and is 10:30 am10:30 in NZST and is 3:30 pm15:30 in PDT
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 NZDT call time
Best time for a conference call or a meeting is between 8am-10:30am in IST which corresponds to 3:30pm-6pm in NZDT
IST to PT 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 PT
4:00 am04:00 India Standard Time (IST). Offset UTC +5:30 hours
6:30 pm18:30 Eastern Daylight Time (EDT). Offset UTC -4:00 hours
10:30 am10:30 New Zealand Standard Time (NZST). Offset UTC +12:00 hours
3:30 pm15:30 Pacific Daylight Time (PDT). Offset UTC -7:00 hours
4:00 am04:00 IST / 6:30 pm18:30 EDT / 10:30 am10:30 NZST / 3:30 pm15:30 PDT
| IST | EDT | NZST | PT |
|---|---|---|---|
| 12am (midnight) | 2:30 pm | 6:30 am | 11:30 am |
| 1am | 3:30 pm | 7:30 am | 12:30 pm |
| 2am | 4:30 pm | 8:30 am | 1:30 pm |
| 3am | 5:30 pm | 9:30 am | 2:30 pm |
| 4am | 6:30 pm | 10:30 am | 3:30 pm |
| 5am | 7:30 pm | 11:30 am | 4:30 pm |
| 6am | 8:30 pm | 12:30 pm | 5:30 pm |
| 7am | 9:30 pm | 1:30 pm | 6:30 pm |
| 8am | 10:30 pm | 2:30 pm | 7:30 pm |
| 9am | 11:30 pm | 3:30 pm | 8:30 pm |
| 10am | 12:30 am | 4:30 pm | 9:30 pm |
| 11am | 1:30 am | 5:30 pm | 10:30 pm |
| 12pm (noon) | 2:30 am | 6:30 pm | 11:30 pm |
| 1pm | 3:30 am | 7:30 pm | 12:30 am |
| 2pm | 4:30 am | 8:30 pm | 1:30 am |
| 3pm | 5:30 am | 9:30 pm | 2:30 am |
| 4pm | 6:30 am | 10:30 pm | 3:30 am |
| 5pm | 7:30 am | 11:30 pm | 4:30 am |
| 6pm | 8:30 am | 12:30 am | 5:30 am |
| 7pm | 9:30 am | 1:30 am | 6:30 am |
| 8pm | 10:30 am | 2:30 am | 7:30 am |
| 9pm | 11:30 am | 3:30 am | 8:30 am |
| 10pm | 12:30 pm | 4:30 am | 9:30 am |
| 11pm | 1:30 pm | 5:30 am | 10:30 am |
| 0:00 | 14:30 | 6:30 | 11:30 |
| 1:00 | 15:30 | 7:30 | 12:30 |
| 2:00 | 16:30 | 8:30 | 13:30 |
| 3:00 | 17:30 | 9:30 | 14:30 |
| 4:00 | 18:30 | 10:30 | 15:30 |
| 5:00 | 19:30 | 11:30 | 16:30 |
| 6:00 | 20:30 | 12:30 | 17:30 |
| 7:00 | 21:30 | 13:30 | 18:30 |
| 8:00 | 22:30 | 14:30 | 19:30 |
| 9:00 | 23:30 | 15:30 | 20:30 |
| 10:00 | 0:30 | 16:30 | 21:30 |
| 11:00 | 1:30 | 17:30 | 22:30 |
| 12:00 | 2:30 | 18:30 | 23:30 |
| 13:00 | 3:30 | 19:30 | 0:30 |
| 14:00 | 4:30 | 20:30 | 1:30 |
| 15:00 | 5:30 | 21:30 | 2:30 |
| 16:00 | 6:30 | 22:30 | 3:30 |
| 17:00 | 7:30 | 23:30 | 4:30 |
| 18:00 | 8:30 | 0:30 | 5:30 |
| 19:00 | 9:30 | 1:30 | 6:30 |
| 20:00 | 10:30 | 2:30 | 7:30 |
| 21:00 | 11:30 | 3:30 | 8:30 |
| 22:00 | 12:30 | 4:30 | 9:30 |
| 23:00 | 13:30 | 5:30 | 10:30 |
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 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
New Zealand Daylight Time
Offset: NZDT is 13 hours ahead Greenwich Mean Time (GMT) and is used in Pacific
Countries: It is used in following countries: Antarctica, New Zealand
Principal Cities: The largest city in the NZDT timezone is Auckland from New Zealand with population about 1.535 million people. Other major cities in the area are Wellington, Christchurch, Hamilton, Tauranga
Daylight Saving: New Zealand Daylight Time (NZDT) is a daylight saving/summer time zone, however during winter some places adjust time for one hour back and observe New Zealand Standard Time (NZST).
End: New Zealand Daylight Time (NZDT) has ended on Sunday, April 6, 2025 at 3:00 am local time and clocks were set one hour back to Sunday, April 6, 2025, 2:00 am local standard time instead. Daylight saving ends annually the on first Sunday of April
Start: New Zealand Daylight Time (NZDT) starts on Sunday, September 28, 2025 at 2:00 am local time and clocks are set one hour forward to Sunday, September 28, 2025, 3:00 am. Daylight saving starts annually the on last Sunday of September
NZDT representations, usage and related time zones
- +13 - basic short
- +1300 - basic
- +13:00 - extended
- +1300 - sign character (+) followed by a four digit time providing hours (13) and minutes (00) of the offset. Indicates thirteen hour and zero minutes time differences to the east of the zero meridian.
- Antarctica/McMurdo
- Antarctica/South_Pole
- NZ
- Pacific/Auckland
- FJST - Fiji Summer Time
- NZDT - New Zealand Daylight Time
- PHOT - Phoenix Island Time
- TKT - Tokelau Time
- TOT - Tonga Time
- WST - West Samoa Time
- WSST - West Samoa Standard Time
Pacific Time
Pacific Time (PT) is a general term used to describe the areas that observe either the Pacific Standard Time (PST) or Pacific Daylight Time (PDT) in the United States and Canada. PT also called Pacific Coast Time. PT is not static but switches between PDT and PST.
Territories observing the Pacific Time Zone are primarily in North America. It runs through the western part of Canada, the United States and the Northwestern part of Mexico.
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
Pacific Time (PT) is a general term used to describe the areas that observe either the Pacific Standard Time (PST) or Pacific Daylight Time (PDT) in the United States and Canada. PT also called Pacific Coast Time. PT is not static but switches between PDT and PST.
Territories observing the Pacific Time Zone are primarily in North America. It runs through the western part of Canada, the United States and the Northwestern part of Mexico.
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
PT 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 PT
- U - short form of 'Uniform'
- Pacific Time - UTC -8
- Ponape Time - UTC +11
- AKDT - Alaska Daylight Time
- PST - Pacific Standard Time
- PT - Pacific Time
- PST - Pitcairn Standard Time
- U - Uniform Time Zone