BST to CST to PDT to EST Time Converter
BST is not used on this date
This converter uses GMT (GMT +0), the offset London uses on this date. Open the GMT converter.PDT is not used on this date
This converter uses PST (GMT -8), the offset Los Angeles uses on this date. Open the PST converter.Quick answers
Selected conversion
The selected date and time will appear here when the converter loads.
How the time difference changes
BST to CST
For most of the year, BST is 6 hours ahead of CDT. At other times of the year, GMT is 6 hours ahead of CST or GMT is 5 hours ahead of CDT.
For most of the year, working hours of 9:00 am to 5:00 pm in BST correspond to 3:00 am to 11:00 am in CDT. At other times of the year, working hours of 9:00 am to 5:00 pm in GMT correspond to 3:00 am to 11:00 am in CST or working hours of 9:00 am to 5:00 pm in GMT correspond to 4:00 am to 12:00 pm in CDT.
BST to PDT
For most of the year, BST is 8 hours ahead of PDT. At other times of the year, GMT is 8 hours ahead of PST or GMT is 7 hours ahead of PDT.
For most of the year, working hours of 9:00 am to 5:00 pm in BST correspond to 1:00 am to 9:00 am in PDT. At other times of the year, working hours of 9:00 am to 5:00 pm in GMT correspond to 1:00 am to 9:00 am in PST or working hours of 9:00 am to 5:00 pm in GMT correspond to 2:00 am to 10:00 am in PDT.
BST to EST
For most of the year, BST is 5 hours ahead of EDT. At other times of the year, GMT is 5 hours ahead of EST or GMT is 4 hours ahead of EDT.
For most of the year, working hours of 9:00 am to 5:00 pm in BST correspond to 4:00 am to 12:00 pm in EDT. At other times of the year, working hours of 9:00 am to 5:00 pm in GMT correspond to 4:00 am to 12:00 pm in EST or working hours of 9:00 am to 5:00 pm in GMT correspond to 5:00 am to 1:00 pm in EDT.
Compare BST time with CST, PDT, and EST time, including current local time, UTC offsets, time difference, daylight saving changes, working hours, and shareable meeting times.
Time Difference
Greenwich Mean Time is 6 hours ahead of Central Standard Time and 8 hours ahead of Pacific Standard Time and 5 hours ahead of Eastern Standard Time
12:00 pm12:00 in GMT is 6:00 am06:00 in CST and is 4:00 am04:00 in PST and is 7:00 am07:00 in EST
GMT to CST call time
Best time for a conference call or a meeting is between 3pm-5pm in GMT which corresponds to 9am-11am in CST
GMT to PST call time
Best time for a conference call or a meeting is between 4:30pm-5:30pm in GMT which corresponds to 8:30am-9:30am in PST
GMT to EST call time
Best time for a conference call or a meeting is between 2pm-5pm in GMT which corresponds to 9am-12pm in EST
12:00 pm12:00 Greenwich Mean Time (GMT). Offset UTC 0:00 hours
6:00 am06:00 Central Standard Time (CST). Offset UTC -6:00 hours
4:00 am04:00 Pacific Standard Time (PST). Offset UTC -8:00 hours
7:00 am07:00 Eastern Standard Time (EST). Offset UTC -5:00 hours
12:00 pm12:00 GMT / 6:00 am06:00 CST / 4:00 am04:00 PST / 7:00 am07:00 EST
| GMT | CST | PST | EST |
|---|---|---|---|
| 12am (midnight) | 6pm | 4pm | 7pm |
| 1am | 7pm | 5pm | 8pm |
| 2am | 8pm | 6pm | 9pm |
| 3am | 9pm | 7pm | 10pm |
| 4am | 10pm | 8pm | 11pm |
| 5am | 11pm | 9pm | 12am (midnight) |
| 6am | 12am (midnight) | 10pm | 1am |
| 7am | 1am | 11pm | 2am |
| 8am | 2am | 12am (midnight) | 3am |
| 9am | 3am | 1am | 4am |
| 10am | 4am | 2am | 5am |
| 11am | 5am | 3am | 6am |
| 12pm (noon) | 6am | 4am | 7am |
| 1pm | 7am | 5am | 8am |
| 2pm | 8am | 6am | 9am |
| 3pm | 9am | 7am | 10am |
| 4pm | 10am | 8am | 11am |
| 5pm | 11am | 9am | 12pm (noon) |
| 6pm | 12pm (noon) | 10am | 1pm |
| 7pm | 1pm | 11am | 2pm |
| 8pm | 2pm | 12pm (noon) | 3pm |
| 9pm | 3pm | 1pm | 4pm |
| 10pm | 4pm | 2pm | 5pm |
| 11pm | 5pm | 3pm | 6pm |
| 00:00 | 18:00 | 16:00 | 19:00 |
| 01:00 | 19:00 | 17:00 | 20:00 |
| 02:00 | 20:00 | 18:00 | 21:00 |
| 03:00 | 21:00 | 19:00 | 22:00 |
| 04:00 | 22:00 | 20:00 | 23:00 |
| 05:00 | 23:00 | 21:00 | 00:00 |
| 06:00 | 00:00 | 22:00 | 01:00 |
| 07:00 | 01:00 | 23:00 | 02:00 |
| 08:00 | 02:00 | 00:00 | 03:00 |
| 09:00 | 03:00 | 01:00 | 04:00 |
| 10:00 | 04:00 | 02:00 | 05:00 |
| 11:00 | 05:00 | 03:00 | 06:00 |
| 12:00 | 06:00 | 04:00 | 07:00 |
| 13:00 | 07:00 | 05:00 | 08:00 |
| 14:00 | 08:00 | 06:00 | 09:00 |
| 15:00 | 09:00 | 07:00 | 10:00 |
| 16:00 | 10:00 | 08:00 | 11:00 |
| 17:00 | 11:00 | 09:00 | 12:00 |
| 18:00 | 12:00 | 10:00 | 13:00 |
| 19:00 | 13:00 | 11:00 | 14:00 |
| 20:00 | 14:00 | 12:00 | 15:00 |
| 21:00 | 15:00 | 13:00 | 16:00 |
| 22:00 | 16:00 | 14:00 | 17:00 |
| 23:00 | 17:00 | 15:00 | 18:00 |
British Summer Time
Offset: BST is 1 hour ahead Greenwich Mean Time (GMT) and is used in Europe
Countries using this time zone: Britain (UK), Guernsey, Isle of Man, Jersey
Principal Cities: The largest city in the BST time zone is London in United Kingdom, with about 8.962 million people. Other major cities in this time zone include Birmingham, Glasgow, Liverpool, Saint Helier.
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.
BST representations, usage and related time zones
- +01 - basic short
- +0100 - basic
- +01:00 - extended
- +0100 - sign character (+) followed by a four digit time providing hours (01) and minutes (00) of the offset. Indicates an offset of one hour to the east of the zero meridian.
- Alpha - Military abbreviation for BST
- A - short form of 'Alpha'
- Europe/Belfast
- Europe/Guernsey
- Europe/Isle_of_Man
- Europe/Jersey
- Europe/London
- GB
- GB-Eire
- British Summer Time - UTC +1
- Bangladesh Standard Time - UTC +6
- Bougainville Standard Time - UTC +11
- BST - British Summer Time
- CET - Central European Time
- IST - Irish Standard Time
- WEST - Western European Summer Time
- A - Alpha Time Zone
- CET - Central European Time
- MEZ - Mitteleuropäische Zeit
- WAT - West Africa Time
- WST - Western Sahara Summer Time
- BMT - Biel Mean Time
Central Standard Time
Offset: CST is 6 hours behind Greenwich Mean Time (GMT) and is used in North America
Countries using this time zone: Belize, Canada, Costa Rica, Guatemala, Honduras, Mexico, Nicaragua, El Salvador, United States
Principal Cities: The largest city in the CST time zone is Mexico City in Mexico, with about 12.294 million people. Other major cities in this time zone include 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. During summer, some places set clocks forward one hour for daylight saving time and observe Central Daylight Time (CDT).
Start: Central Standard Time (CST) started on Sunday, November 2, 2025 at 2:00 am local time and clocks were set one hour back to Sunday, November 2, 2025, 1:00 am. Standard time starts annually on the first Sunday of November.
End: Central Standard Time (CST) ends on Sunday, March 8, 2026 at 2:00 am local time and clocks are set one hour forward to Sunday, March 8, 2026, 3:00 am local daylight time instead. Standard time ends annually on the second Sunday of March.
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 an offset of six hours 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
- CST - Central Standard Time
- CT - Central Time
- MDT - Mountain Daylight Time
- EAST - Easter Island Standard Time
- GALT - Galapagos Time
- S - Sierra Time Zone
Pacific Daylight Time
Offset: PDT is 7 hours behind Greenwich Mean Time (GMT) and is used in North America
Countries using this time zone: Canada, Mexico, United States
Principal Cities: The largest city in the PDT time zone is Los Angeles in the United States, with about 3.821 million people. Other major cities in this time zone include Tijuana, San Diego, Mexicali, San Jose.
French: HAP - Heure Avancée du Pacifique
Spanish: PT - Zona Noroeste
Daylight Saving: Pacific Daylight Time (PDT) is a daylight saving/summer time zone, but some places set clocks back one hour during winter and observe Pacific Standard Time (PST).
End: Pacific Daylight Time (PDT) ended on Sunday, November 2, 2025 at 2:00 am local time and clocks were set one hour back to Sunday, November 2, 2025, 1:00 am local standard time instead. Daylight saving ends annually on the first Sunday of November
Start: Pacific Daylight Time (PDT) starts on Sunday, March 8, 2026 at 2:00 am local time and clocks are set one hour forward to Sunday, March 8, 2026, 3:00 am. Daylight saving starts annually on the second Sunday of March
PDT 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 an offset of seven hours to the west of the zero meridian.
- Tango - Military abbreviation for PDT
- T - short form of 'Tango'
- America/Ensenada
- America/Los_Angeles
- America/Santa_Isabel
- America/Tijuana
- America/Vancouver
- Canada/Pacific
- Mexico/BajaNorte
- PST8PDT
- US/Pacific
- MST - Mountain Standard Time
- PDT - Pacific Daylight Time
- YST - Yukon Standard Time
- T - Tango Time Zone
Eastern Standard Time
Offset: EST is 5 hours behind Greenwich Mean Time (GMT) and is used in North America
Countries using this time zone: Bahamas, Canada, Haiti, Jamaica, Cayman Islands, Mexico, Panama, Turks & Caicos Is, United States
Principal Cities: The largest city in the EST time zone is New York City in the United States, with about 8.804 million people. Other major cities in this time zone include Toronto, Brooklyn, Borough of Queens, Montreal.
French: HNE - Heure Normale de l'Est
Spanish: ET - Tiempo del Este, ET - Zona Sureste
Daylight Saving: This is a standard time zone. During summer, some places set clocks forward one hour for daylight saving time and observe Eastern Daylight Time (EDT).
Start: Eastern Standard Time (EST) started on Sunday, November 2, 2025 at 2:00 am local time and clocks were set one hour back to Sunday, November 2, 2025, 1:00 am. Standard time starts annually on the first Sunday of November.
End: Eastern Standard Time (EST) ends on Sunday, March 8, 2026 at 2:00 am local time and clocks are set one hour forward to Sunday, March 8, 2026, 3:00 am local daylight time instead. Standard time ends annually on the second Sunday of March.
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 an offset of five hours 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