PST to IST to CDT to GMT
Time Difference
Pacific Daylight Time is 12 hours and 30 minutes behind India Standard Time and 2 hours behind Central Daylight Time and 7 hours behind Greenwich Mean Time
10:00 pm22:00 in PDT is 10:30 am10:30 in IST and is 12:00 am00:00 in CDT and is 5:00 am05:00 in GMT
PST to IST call time
Best time for a conference call or a meeting is between 6am-8am in PST which corresponds to 7:30pm-9:30pm in IST
PST to CDT call time
Best time for a conference call or a meeting is between 8am-3pm in PST which corresponds to 11am-6pm in CDT
PST to GMT call time
Best time for a conference call or a meeting is between 8am-10am in PST which corresponds to 4pm-6pm in GMT
10:00 pm22:00 Pacific Daylight Time (PDT). Offset UTC -7:00 hours
10:30 am10:30 India Standard Time (IST). Offset UTC +5:30 hours
12:00 am00:00 Central Daylight Time (CDT). Offset UTC -5:00 hours
5:00 am05:00 Greenwich Mean Time (GMT). Offset UTC 0:00 hours
10:00 pm22:00 PDT / 10:30 am10:30 IST / 12:00 am00:00 CDT / 5:00 am05:00 GMT
| PDT | IST | CDT | GMT |
|---|---|---|---|
| 12am (midnight) | 12:30 pm | 2am | 7am |
| 1am | 1:30 pm | 3am | 8am |
| 2am | 2:30 pm | 4am | 9am |
| 3am | 3:30 pm | 5am | 10am |
| 4am | 4:30 pm | 6am | 11am |
| 5am | 5:30 pm | 7am | 12pm (noon) |
| 6am | 6:30 pm | 8am | 1pm |
| 7am | 7:30 pm | 9am | 2pm |
| 8am | 8:30 pm | 10am | 3pm |
| 9am | 9:30 pm | 11am | 4pm |
| 10am | 10:30 pm | 12pm (noon) | 5pm |
| 11am | 11:30 pm | 1pm | 6pm |
| 12pm (noon) | 12:30 am | 2pm | 7pm |
| 1pm | 1:30 am | 3pm | 8pm |
| 2pm | 2:30 am | 4pm | 9pm |
| 3pm | 3:30 am | 5pm | 10pm |
| 4pm | 4:30 am | 6pm | 11pm |
| 5pm | 5:30 am | 7pm | 12am (midnight) |
| 6pm | 6:30 am | 8pm | 1am |
| 7pm | 7:30 am | 9pm | 2am |
| 8pm | 8:30 am | 10pm | 3am |
| 9pm | 9:30 am | 11pm | 4am |
| 10pm | 10:30 am | 12am (midnight) | 5am |
| 11pm | 11:30 am | 1am | 6am |
| 0:00 | 12:30 | 2:00 | 7:00 |
| 1:00 | 13:30 | 3:00 | 8:00 |
| 2:00 | 14:30 | 4:00 | 9:00 |
| 3:00 | 15:30 | 5:00 | 10:00 |
| 4:00 | 16:30 | 6:00 | 11:00 |
| 5:00 | 17:30 | 7:00 | 12:00 |
| 6:00 | 18:30 | 8:00 | 13:00 |
| 7:00 | 19:30 | 9:00 | 14:00 |
| 8:00 | 20:30 | 10:00 | 15:00 |
| 9:00 | 21:30 | 11:00 | 16:00 |
| 10:00 | 22:30 | 12:00 | 17:00 |
| 11:00 | 23:30 | 13:00 | 18:00 |
| 12:00 | 0:30 | 14:00 | 19:00 |
| 13:00 | 1:30 | 15:00 | 20:00 |
| 14:00 | 2:30 | 16:00 | 21:00 |
| 15:00 | 3:30 | 17:00 | 22:00 |
| 16:00 | 4:30 | 18:00 | 23:00 |
| 17:00 | 5:30 | 19:00 | 0:00 |
| 18:00 | 6:30 | 20:00 | 1:00 |
| 19:00 | 7:30 | 21:00 | 2:00 |
| 20:00 | 8:30 | 22:00 | 3:00 |
| 21:00 | 9:30 | 23:00 | 4:00 |
| 22:00 | 10:30 | 0:00 | 5:00 |
| 23:00 | 11:30 | 1:00 | 6:00 |
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
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
Central Daylight Time
Offset: CDT is 5 hours behind Greenwich Mean Time (GMT) and is used in North America
Countries: It is used in following countries: Canada, Cuba, Mexico, United States
Principal Cities: The largest city in the CDT timezone is Chicago from USA with population about 2.696 million people. Other major cities in the area are Havana, Houston, Ciudad Juarez, San Antonio
French: HAC - Heure Avancée du Centre
Spanish: CT - Zona Centro
Daylight Saving: Central Daylight Time (CDT) is a daylight saving/summer timezone, however during winter some places switch clocks for one hour back and observe Central Standard Time (CST).
Start: Central Daylight Time (CDT) 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: Central Daylight Time (CDT) 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
CDT 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 CDT
- R - short form of 'Romeo'
- America/Chicago
- America/Indiana/Knox
- America/Indiana/Tell_City
- America/Knox_IN
- America/Matamoros
- America/Menominee
- America/North_Dakota/Beulah
- America/North_Dakota/Center
- America/North_Dakota/New_Salem
- America/Ojinaga
- America/Rainy_River
- America/Rankin_Inlet
- America/Resolute
- America/Winnipeg
- CST6CDT
- Canada/Central
- US/Central
- US/Indiana-Starke
- Central Daylight Time - UTC -5
- Cuba Daylight Time - UTC -4
- 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
Greenwich Mean Time
Offset: GMT is 0 hours ahead Greenwich Mean Time (GMT) and is used in Europe
Countries: It is used in following countries: Burkina Faso, Côte d'Ivoire, Britain (UK), Guernsey, Ghana, Greenland, Gambia, Guinea, Guinea-Bissau, Ireland, Isle of Man, Iceland, Jersey, Liberia, Mali, Mauritania, St Helena, Sierra Leone, Senegal, Sao Tome & Principe, Togo
Principal Cities: The largest city in the GMT timezone is London from United Kingdom with population about 7.557 million people. Other major cities in the area are Abidjan, Dakar, Grand Dakar, Accra
Greenwich Mean Time (GMT) originally referred to the mean solar time at the Royal Observatory in Greenwich, London. It is now often used to refer to Coordinated Universal Time (UTC) when this is viewed as a time zone, and in casual use for the most parts it is the same. In military GMT is known as Zulu time.Greenwich Mean Time was the same as Universal Time (UT), until the introduction of UTC in 1972 a standard astronomical concept used in many technical fields.
GMT 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 GMT
- Z - short form of 'Zulu'
- Africa/Abidjan
- Africa/Accra
- Africa/Bamako
- Africa/Banjul
- Africa/Bissau
- Africa/Conakry
- Africa/Dakar
- Africa/Freetown
- Africa/Lome
- Africa/Monrovia
- Africa/Nouakchott
- Africa/Ouagadougou
- Africa/Sao_Tome
- Africa/Timbuktu
- America/Danmarkshavn
- Atlantic/Reykjavik
- Atlantic/St_Helena
- Eire
- Etc/GMT
- Etc/GMT+0
- Etc/GMT-0
- Etc/GMT0
- Etc/Greenwich
- Europe/Belfast
- Europe/Dublin
- Europe/Guernsey
- Europe/Isle_of_Man
- Europe/Jersey
- Europe/London
- GB
- GB-Eire
- GMT
- GMT+0
- GMT-0
- GMT0
- Greenwich
- Iceland
- Greenwich Mean Time - UTC +0
- GMT+05:00 - UTC +5
- GMT+03:00 - UTC +3
- GMT - UTC +0
- GMT+11:00 - UTC +11
- GMT-02:00 - UTC -2
- 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