GMT to CST Converter
Time Difference
Greenwich Mean Time is 5 hours ahead of Central Daylight Time
1:00 am01:00 in GMT is 8:00 pm20:00 in CDT
GMT to CDT call time
Best time for a conference call or a meeting is between 2pm-5pm in GMT which corresponds to 9am-12pm in CDT
1:00 am01:00 Greenwich Mean Time (GMT). Offset UTC 0:00 hours
8:00 pm20:00 Central Daylight Time (CDT). Offset UTC -5:00 hours
1:00 am01:00 GMT / 8:00 pm20:00 CDT
| GMT | CDT |
|---|---|
| 12am (midnight) | 7pm |
| 1am | 8pm |
| 2am | 9pm |
| 3am | 10pm |
| 4am | 11pm |
| 5am | 12am (midnight) |
| 6am | 1am |
| 7am | 2am |
| 8am | 3am |
| 9am | 4am |
| 10am | 5am |
| 11am | 6am |
| 12pm (noon) | 7am |
| 1pm | 8am |
| 2pm | 9am |
| 3pm | 10am |
| 4pm | 11am |
| 5pm | 12pm (noon) |
| 6pm | 1pm |
| 7pm | 2pm |
| 8pm | 3pm |
| 9pm | 4pm |
| 10pm | 5pm |
| 11pm | 6pm |
| 0:00 | 19:00 |
| 1:00 | 20:00 |
| 2:00 | 21:00 |
| 3:00 | 22:00 |
| 4:00 | 23:00 |
| 5:00 | 0:00 |
| 6:00 | 1:00 |
| 7:00 | 2:00 |
| 8:00 | 3:00 |
| 9:00 | 4:00 |
| 10:00 | 5:00 |
| 11:00 | 6:00 |
| 12:00 | 7:00 |
| 13:00 | 8:00 |
| 14:00 | 9:00 |
| 15:00 | 10:00 |
| 16:00 | 11:00 |
| 17:00 | 12:00 |
| 18:00 | 13:00 |
| 19:00 | 14:00 |
| 20:00 | 15:00 |
| 21:00 | 16:00 |
| 22:00 | 17:00 |
| 23:00 | 18:00 |
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 FasoCôte d'IvoireBritain (UK)GuernseyGhanaGreenlandGambiaGuineaGuinea-BissauIrelandIsle of ManIcelandJerseyLiberiaMaliMauritaniaSt HelenaSierra LeoneSenegalSao Tome & PrincipeTogo
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 AbidjanDakarGrand DakarAccra
Greenwich Mean Time (GMT) originally referred to the mean solar time at the Royal Observatory in GreenwichLondon. It is now often used to refer to Coordinated Universal Time (UTC) when this is viewed as a time zoneand 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 representationsusage and related time zones
- Z - is the zone designator for the zero UTC/GMT offsetalso 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
- 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 Standard Time
Offset: CST is 6 hours behind Greenwich Mean Time (GMT) and is used in North America
Countries: It is used in following countries: BelizeCanadaCosta RicaGuatemalaHondurasMexicoNicaraguaEl SalvadorUnited States
Principal Cities: The largest city in the CST timezone is Mexico City from Mexico with population about 12.294 million people. Other major cities in the area are ChicagoHoustonIztapalapaEcatepec
French: HNC - Heure Normale du Centre
Spanish: CT - Tiempo Central EstándarCT - Zona Centro
Daylight Saving: This is a standard time zonehowever during summer some places switch clocks for one hour forward when daylight saving comes into effect and observe Central Daylight Time (CDT).
End: Central Standard Time (CST) has ended on Sunday March 82026 at 2:00 am local time and clocks were set one hour forward to Sunday March 82026 3:00 am local daylight time instead. Standard time ends annually the on second Sunday of March.
Start: Central Standard Time (CST) starts on Sunday November 12026 at 2:00 am local time and clocks are set one hour back to Sunday November 12026 1:00 am. Standard time starts annually the on first Sunday of November.
CST representationsusage 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 six hour and zero minutes time differences 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