GST to GMT to CEST to AST to EST to CST to MST to PDT to SGT Time Converter
CEST is not used on this date
This converter uses CET (GMT +1), the offset Berlin uses on this date. Open the CET 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
GST to GMT
GST is 4 hours ahead of GMT year-round.
Working hours of 9:00 am to 5:00 pm in GST correspond to 5:00 am to 1:00 pm in GMT.
GST to CEST
For most of the year, GST is 2 hours ahead of CEST. During seasonal clock changes, GST is 3 hours ahead of CET.
For most of the year, working hours of 9:00 am to 5:00 pm in GST correspond to 7:00 am to 3:00 pm in CEST. During seasonal clock changes, working hours of 9:00 am to 5:00 pm in GST correspond to 6:00 am to 2:00 pm in CET.
GST to AST
For most of the year, GST is 7 hours ahead of ADT. During seasonal clock changes, GST is 8 hours ahead of AST.
For most of the year, working hours of 9:00 am to 5:00 pm in GST correspond to 2:00 am to 10:00 am in ADT. During seasonal clock changes, working hours of 9:00 am to 5:00 pm in GST correspond to 1:00 am to 9:00 am in AST.
GST to EST
For most of the year, GST is 8 hours ahead of EDT. During seasonal clock changes, GST is 9 hours ahead of EST.
For most of the year, working hours of 9:00 am to 5:00 pm in GST correspond to 1:00 am to 9:00 am in EDT. During seasonal clock changes, working hours of 9:00 am to 5:00 pm in GST correspond to 12:00 am to 8:00 am in EST.
GST to CST
For most of the year, GST is 9 hours ahead of CDT. During seasonal clock changes, GST is 10 hours ahead of CST.
For most of the year, working hours of 9:00 am to 5:00 pm in GST correspond to 12:00 am to 8:00 am in CDT. During seasonal clock changes, working hours of 9:00 am to 5:00 pm in GST correspond to 11:00 pm (previous day) to 7:00 am in CST.
GST to MST
For most of the year, GST is 10 hours ahead of MDT. During seasonal clock changes, GST is 11 hours ahead of MST.
For most of the year, working hours of 9:00 am to 5:00 pm in GST correspond to 11:00 pm (previous day) to 7:00 am in MDT. During seasonal clock changes, working hours of 9:00 am to 5:00 pm in GST correspond to 10:00 pm (previous day) to 6:00 am in MST.
GST to PDT
For most of the year, GST is 11 hours ahead of PDT. During seasonal clock changes, GST is 12 hours ahead of PST.
For most of the year, working hours of 9:00 am to 5:00 pm in GST correspond to 10:00 pm (previous day) to 6:00 am in PDT. During seasonal clock changes, working hours of 9:00 am to 5:00 pm in GST correspond to 9:00 pm (previous day) to 5:00 am in PST.
GST to SGT
GST is 4 hours behind SGT year-round.
Working hours of 9:00 am to 5:00 pm in GST correspond to 1:00 pm to 9:00 pm in SGT.
Compare GST time with GMT, CEST, AST, EST, CST, MST, PDT, and SGT time, including current local time, UTC offsets, time difference, daylight saving changes, working hours, and shareable meeting times.
Time Difference
Gulf Standard Time is 4 hours ahead of Greenwich Mean Time and 3 hours ahead of Central European Time and 8 hours ahead of Atlantic Standard Time and 9 hours ahead of Eastern Standard Time and 10 hours ahead of Central Standard Time and 11 hours ahead of Mountain Standard Time and 12 hours ahead of Pacific Standard Time and 4 hours behind Singapore Time
4:00 pm16:00 in GST is 12:00 pm12:00 in GMT and is 1:00 pm13:00 in CET and is 8:00 am08:00 in AST and is 7:00 am07:00 in EST and is 6:00 am06:00 in CST and is 5:00 am05:00 in MST and is 4:00 am04:00 in PST and is 8:00 pm20:00 in SGT
GST to GMT call time
Best time for a conference call or a meeting is between 1pm-5pm in GST which corresponds to 9am-1pm in GMT
GST to CET call time
Best time for a conference call or a meeting is between 12pm-5pm in GST which corresponds to 9am-2pm in CET
GST to AST call time
Best time for a conference call or a meeting is between 4:30pm-5:30pm in GST which corresponds to 8:30am-9:30am in AST
GST to EST call time
Best time for a conference call or a meeting is between 5pm-6pm in GST which corresponds to 8am-9am in EST
GST to CST call time
Best time for a conference call or a meeting is between 5:30pm-6:30pm in GST which corresponds to 7:30am-8:30am in CST
GST to MST call time
Best time for a conference call or a meeting is between 6pm-7pm in GST which corresponds to 7am-8am in MST
GST to PST call time
Best time for a conference call or a meeting is between 7pm-8pm in GST which corresponds to 7am-8am in PST
GST to SGT call time
Best time for a conference call or a meeting is between 9am-1pm in GST which corresponds to 1pm-5pm in SGT
4:00 pm16:00 Gulf Standard Time (GST). Offset UTC +4:00 hours
12:00 pm12:00 Greenwich Mean Time (GMT). Offset UTC 0:00 hours
1:00 pm13:00 Central European Time (CET). Offset UTC +1:00 hour
8:00 am08:00 Atlantic Standard Time (AST). Offset UTC -4:00 hours
7:00 am07:00 Eastern Standard Time (EST). Offset UTC -5:00 hours
6:00 am06:00 Central Standard Time (CST). Offset UTC -6:00 hours
5:00 am05:00 Mountain Standard Time (MST). Offset UTC -7:00 hours
4:00 am04:00 Pacific Standard Time (PST). Offset UTC -8:00 hours
8:00 pm20:00 Singapore Time (SGT). Offset UTC +8:00 hours
4:00 pm16:00 GST / 12:00 pm12:00 GMT / 1:00 pm13:00 CET / 8:00 am08:00 AST / 7:00 am07:00 EST / 6:00 am06:00 CST / 5:00 am05:00 MST / 4:00 am04:00 PST / 8:00 pm20:00 SGT
| GST | GMT | CET | AST | EST | CST | MST | PST | SGT |
|---|---|---|---|---|---|---|---|---|
| 12am (midnight) | 8pm | 9pm | 4pm | 3pm | 2pm | 1pm | 12pm (noon) | 4am |
| 1am | 9pm | 10pm | 5pm | 4pm | 3pm | 2pm | 1pm | 5am |
| 2am | 10pm | 11pm | 6pm | 5pm | 4pm | 3pm | 2pm | 6am |
| 3am | 11pm | 12am (midnight) | 7pm | 6pm | 5pm | 4pm | 3pm | 7am |
| 4am | 12am (midnight) | 1am | 8pm | 7pm | 6pm | 5pm | 4pm | 8am |
| 5am | 1am | 2am | 9pm | 8pm | 7pm | 6pm | 5pm | 9am |
| 6am | 2am | 3am | 10pm | 9pm | 8pm | 7pm | 6pm | 10am |
| 7am | 3am | 4am | 11pm | 10pm | 9pm | 8pm | 7pm | 11am |
| 8am | 4am | 5am | 12am (midnight) | 11pm | 10pm | 9pm | 8pm | 12pm (noon) |
| 9am | 5am | 6am | 1am | 12am (midnight) | 11pm | 10pm | 9pm | 1pm |
| 10am | 6am | 7am | 2am | 1am | 12am (midnight) | 11pm | 10pm | 2pm |
| 11am | 7am | 8am | 3am | 2am | 1am | 12am (midnight) | 11pm | 3pm |
| 12pm (noon) | 8am | 9am | 4am | 3am | 2am | 1am | 12am (midnight) | 4pm |
| 1pm | 9am | 10am | 5am | 4am | 3am | 2am | 1am | 5pm |
| 2pm | 10am | 11am | 6am | 5am | 4am | 3am | 2am | 6pm |
| 3pm | 11am | 12pm (noon) | 7am | 6am | 5am | 4am | 3am | 7pm |
| 4pm | 12pm (noon) | 1pm | 8am | 7am | 6am | 5am | 4am | 8pm |
| 5pm | 1pm | 2pm | 9am | 8am | 7am | 6am | 5am | 9pm |
| 6pm | 2pm | 3pm | 10am | 9am | 8am | 7am | 6am | 10pm |
| 7pm | 3pm | 4pm | 11am | 10am | 9am | 8am | 7am | 11pm |
| 8pm | 4pm | 5pm | 12pm (noon) | 11am | 10am | 9am | 8am | 12am (midnight) |
| 9pm | 5pm | 6pm | 1pm | 12pm (noon) | 11am | 10am | 9am | 1am |
| 10pm | 6pm | 7pm | 2pm | 1pm | 12pm (noon) | 11am | 10am | 2am |
| 11pm | 7pm | 8pm | 3pm | 2pm | 1pm | 12pm (noon) | 11am | 3am |
| 00:00 | 20:00 | 21:00 | 16:00 | 15:00 | 14:00 | 13:00 | 12:00 | 04:00 |
| 01:00 | 21:00 | 22:00 | 17:00 | 16:00 | 15:00 | 14:00 | 13:00 | 05:00 |
| 02:00 | 22:00 | 23:00 | 18:00 | 17:00 | 16:00 | 15:00 | 14:00 | 06:00 |
| 03:00 | 23:00 | 00:00 | 19:00 | 18:00 | 17:00 | 16:00 | 15:00 | 07:00 |
| 04:00 | 00:00 | 01:00 | 20:00 | 19:00 | 18:00 | 17:00 | 16:00 | 08:00 |
| 05:00 | 01:00 | 02:00 | 21:00 | 20:00 | 19:00 | 18:00 | 17:00 | 09:00 |
| 06:00 | 02:00 | 03:00 | 22:00 | 21:00 | 20:00 | 19:00 | 18:00 | 10:00 |
| 07:00 | 03:00 | 04:00 | 23:00 | 22:00 | 21:00 | 20:00 | 19:00 | 11:00 |
| 08:00 | 04:00 | 05:00 | 00:00 | 23:00 | 22:00 | 21:00 | 20:00 | 12:00 |
| 09:00 | 05:00 | 06:00 | 01:00 | 00:00 | 23:00 | 22:00 | 21:00 | 13:00 |
| 10:00 | 06:00 | 07:00 | 02:00 | 01:00 | 00:00 | 23:00 | 22:00 | 14:00 |
| 11:00 | 07:00 | 08:00 | 03:00 | 02:00 | 01:00 | 00:00 | 23:00 | 15:00 |
| 12:00 | 08:00 | 09:00 | 04:00 | 03:00 | 02:00 | 01:00 | 00:00 | 16:00 |
| 13:00 | 09:00 | 10:00 | 05:00 | 04:00 | 03:00 | 02:00 | 01:00 | 17:00 |
| 14:00 | 10:00 | 11:00 | 06:00 | 05:00 | 04:00 | 03:00 | 02:00 | 18:00 |
| 15:00 | 11:00 | 12:00 | 07:00 | 06:00 | 05:00 | 04:00 | 03:00 | 19:00 |
| 16:00 | 12:00 | 13:00 | 08:00 | 07:00 | 06:00 | 05:00 | 04:00 | 20:00 |
| 17:00 | 13:00 | 14:00 | 09:00 | 08:00 | 07:00 | 06:00 | 05:00 | 21:00 |
| 18:00 | 14:00 | 15:00 | 10:00 | 09:00 | 08:00 | 07:00 | 06:00 | 22:00 |
| 19:00 | 15:00 | 16:00 | 11:00 | 10:00 | 09:00 | 08:00 | 07:00 | 23:00 |
| 20:00 | 16:00 | 17:00 | 12:00 | 11:00 | 10:00 | 09:00 | 08:00 | 00:00 |
| 21:00 | 17:00 | 18:00 | 13:00 | 12:00 | 11:00 | 10:00 | 09:00 | 01:00 |
| 22:00 | 18:00 | 19:00 | 14:00 | 13:00 | 12:00 | 11:00 | 10:00 | 02:00 |
| 23:00 | 19:00 | 20:00 | 15:00 | 14:00 | 13:00 | 12:00 | 11:00 | 03:00 |
Gulf Standard Time
Offset: GST is 4 hours ahead Greenwich Mean Time (GMT) and is used in Asia
Countries using this time zone: United Arab Emirates
Principal Cities: The largest city in the GST time zone is Dubai in United Arab Emirates, with about 1.137 million people. Other major cities in this time zone include Abu Dhabi, Sharjah, Al Ain, Ajman.
Daylight Saving: Clocks in Gulf Standard Time (GST) do not change for daylight saving time, so GST stays the same throughout the year. Other time zones may set clocks forward in summer and back in winter.
GST 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 an offset of four hours to the east of the zero meridian.
- Delta - Military abbreviation for GST
- D - short form of 'Delta'
- KUYT - Kuybyshev Time
- MSD - Moscow Daylight Time
- SAMT - Samara Time
- AMT - Armenia Time
- AZT - Azerbaijan Time
- D - Delta Time Zone
- GET - Georgia Standard Time
- GST - Gulf Standard Time
- MUT - Mauritius Time
- RET - Reunion Time
- SCT - Seychelles Time
Greenwich Mean Time
Offset: GMT is 0 hours ahead Greenwich Mean Time (GMT) and is used in Europe
Countries using this time zone: 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 time zone is London in United Kingdom, with about 7.557 million people. Other major cities in this time zone include 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 the zero UTC/GMT offset.
- 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
- 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
Central European Summer Time
Offset: CEST is 2 hours ahead Greenwich Mean Time (GMT) and is used in Europe
Countries using this time zone: Andorra, Albania, Austria, Bosnia & Herzegovina, Belgium, Switzerland, Czech Republic, Germany, Denmark, Spain, France, Gibraltar, Croatia, Hungary, Italy, Liechtenstein, Luxembourg, Monaco, Montenegro, North Macedonia, Malta, Netherlands, Norway, Poland, Serbia, Sweden, Slovenia, Svalbard & Jan Mayen, Slovakia, San Marino, Vatican City
Principal Cities: The largest city in the CEST time zone is Berlin in Germany, with about 3.426 million people. Other major cities in this time zone include Madrid, Rome, Paris, Budapest.
German: MESZ - Mitteleuropäische Sommerzeit
Daylight Saving: Central European Summer Time (CEST) is a daylight saving/summer time zone, but some places set clocks back one hour during winter and observe Central European Time (CET).
End: Central European Summer Time (CEST) ended on Sunday, October 26, 2025 at 3:00 am local time and clocks were set one hour back to Sunday, October 26, 2025, 2:00 am local standard time instead. Daylight saving ends annually on the last Sunday of October
Start: Central European Summer Time (CEST) starts on Sunday, March 29, 2026 at 2:00 am local time and clocks are set one hour forward to Sunday, March 29, 2026, 3:00 am. Daylight saving starts annually on the last Sunday of March
CEST representations, usage and related time zones
- +02 - basic short
- +0200 - basic
- +02:00 - extended
- +0200 - sign character (+) followed by a four digit time providing hours (02) and minutes (00) of the offset. Indicates an offset of two hours to the east of the zero meridian.
- Bravo - Military abbreviation for CEST
- B - short form of 'Bravo'
- Africa/Ceuta
- Arctic/Longyearbyen
- Atlantic/Jan_Mayen
- CET
- Europe/Amsterdam
- Europe/Andorra
- Europe/Belgrade
- Europe/Berlin
- Europe/Bratislava
- Europe/Brussels
- Europe/Budapest
- Europe/Busingen
- Europe/Copenhagen
- Europe/Gibraltar
- Europe/Ljubljana
- Europe/Luxembourg
- Europe/Madrid
- Europe/Malta
- Europe/Monaco
- Europe/Oslo
- Europe/Paris
- Europe/Podgorica
- Europe/Prague
- Europe/Rome
- Europe/San_Marino
- Europe/Sarajevo
- Europe/Skopje
- Europe/Stockholm
- Europe/Tirane
- Europe/Vaduz
- Europe/Vatican
- Europe/Vienna
- Europe/Warsaw
- Europe/Zagreb
- Europe/Zurich
- MET
- Poland
- CEST - Central European Summer Time
- EET - Eastern European Time
- MESZ - Mitteleuropäische Sommerzeit
- B - Bravo Time Zone
- CAT - Central Africa Time
- IST - Israel Standard Time
- SAST - South Africa Standard Time
- WAST - West Africa Summer Time
Atlantic Standard Time
Offset: AST is 4 hours behind Greenwich Mean Time (GMT) and is used in North America
Countries using this time zone: Antigua & Barbuda, Anguilla, Aruba, Barbados, St Barthelemy, Bermuda, Caribbean NL, Canada, Curaçao, Dominica, Dominican Republic, Grenada, Greenland, Guadeloupe, St Kitts & Nevis, St Lucia, St Martin (French), Martinique, Montserrat, Puerto Rico, St Maarten (Dutch), Trinidad & Tobago, St Vincent, Virgin Islands (UK), Virgin Islands (US)
Principal Cities: The largest city in the AST time zone is Santo Domingo in Dominican Republic, with about 2.202 million people. Other major cities in this time zone include Santiago de los Caballeros, Santo Domingo Oeste, San Juan, Halifax.
French: HNA - Heure Normale de l'Atlantique
Spanish: AST - Tiempo Estándar del Atlántico
Daylight Saving: This is a standard time zone. During summer, some places set clocks forward one hour for daylight saving time and observe Atlantic Daylight Time (ADT).
Start: Atlantic Standard Time (AST) 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: Atlantic Standard Time (AST) 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.
AST 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 an offset of four hours to the west of the zero meridian.
- Quebec - Military abbreviation for AST
- Q - short form of 'Quebec'
- America/Anguilla
- America/Antigua
- America/Aruba
- America/Barbados
- America/Blanc-Sablon
- America/Curacao
- America/Dominica
- America/Glace_Bay
- America/Goose_Bay
- America/Grenada
- America/Guadeloupe
- America/Halifax
- America/Kralendijk
- America/Lower_Princes
- America/Marigot
- America/Martinique
- America/Moncton
- America/Montserrat
- America/Port_of_Spain
- America/Puerto_Rico
- America/Santo_Domingo
- America/St_Barthelemy
- America/St_Kitts
- America/St_Lucia
- America/St_Thomas
- America/St_Vincent
- America/Thule
- America/Tortola
- America/Virgin
- Atlantic/Bermuda
- Canada/Atlantic
- Atlantic Standard Time - UTC -4
- Arabia Standard Time - UTC +3
- 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
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 8.175 million people. Other major cities in this time zone include 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. 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
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
Mountain Standard Time
Offset: MST 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 MST time zone is Phoenix in the United States, with about 1.446 million people. Other major cities in this time zone include Calgary, Edmonton, El Paso, Denver.
French: HNR - Heure Normale des Rocheuses
Spanish: MT - Zona Pacífico
Daylight Saving: This is a standard time zone. During summer, some places set clocks forward one hour for daylight saving time and observe Mountain Daylight Time (MDT).
Start: Mountain Standard Time (MST) 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: Mountain Standard Time (MST) 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.
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 an offset of seven hours 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
- MST - Mountain Standard Time
- PDT - Pacific Daylight Time
- YST - Yukon Standard Time
- T - Tango 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 3.793 million people. Other major cities in this time zone include Vancouver, Tijuana, San Diego, 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
Singapore Time
Offset: SGT is 8 hours ahead Greenwich Mean Time (GMT) and is used in Asia
Countries using this time zone: Singapore
Principal Cities: The largest city in the SGT time zone is Singapore in Singapore, with about 3.548 million people.
Daylight Saving: Clocks in Singapore Time (SGT) do not change for daylight saving time, so SGT stays the same throughout the year. Other time zones may set clocks forward in summer and back in winter.
SGT 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 an offset of eight hours to the east of the zero meridian.
- Hotel - Military abbreviation for SGT
- H - short form of 'Hotel'
- ACT - ASEAN Common Time
- AWST - Australian Western Standard Time
- BNT - Brunei Darussalam Time
- CAST - Casey Time
- CHOT - Choibalsan Time
- CST - China Standard Time
- H - Hotel Time Zone
- HKT - Hong Kong Time
- HOVST - Hovd Summer Time
- IRKT - Irkutsk Time
- KRAST - Krasnoyarsk Summer Time
- MYT - Malaysia Time
- PHT - Philippine Time
- SGT - Singapore Time
- ULAT - Ulaanbaatar Time
- WITA - Central Indonesian Time