GMT to CDT to EST to PST Time Converter
The United Kingdom is on summer time: BST (UTC+1) until Sun, Oct 29.
Iceland and Ghana stay on GMT (UTC+0).
Eastern Time is on daylight saving time: EDT (UTC−4) until Sun, Nov 5.
Pacific Time is on daylight saving time: PDT (UTC−7) until Sun, Nov 5.
Start by searching for a time zone, city, or town.
Add one or more places to compare local times, adjust the date, and share the result.
Quick answers
Selected conversion
3:00 pm15:00 GMT (UTC+0), Sep 13, 2017 = 10:00 am10:00 CDT (UTC-5), Sep 13, 2017 = 11:00 am11:00 EDT (UTC-4), Sep 13, 2017 = 8:00 am08:00 PDT (UTC-7), Sep 13, 2017
GMT is 5 hours ahead of CDT. GMT is 4 hours ahead of EDT. GMT is 7 hours ahead of PDT.
How the time difference changes
GMT to CDT
For most of the year, GMT is 5 hours ahead of CDT. From Nov 1, 2026 to Mar 14, 2027, GMT is 6 hours ahead of CST.
For most of the year, working hours of 9:00 am to 6:00 pm in GMT correspond to 4:00 am to 1:00 pm in CDT. At other times of the year, working hours of 9:00 am to 6:00 pm in GMT correspond to 3:00 am to 12:00 pm in CST.For most of the year, working hours of 09:00 to 18:00 in GMT correspond to 04:00 to 13:00 in CDT. At other times of the year, working hours of 09:00 to 18:00 in GMT correspond to 03:00 to 12:00 in CST.
GMT to EST
For most of the year, GMT is 4 hours ahead of EDT. From Nov 1, 2026 to Mar 14, 2027, GMT is 5 hours ahead of EST.
For most of the year, working hours of 9:00 am to 6:00 pm in GMT correspond to 5:00 am to 2:00 pm in EDT. At other times of the year, working hours of 9:00 am to 6:00 pm in GMT correspond to 4:00 am to 1:00 pm in EST.For most of the year, working hours of 09:00 to 18:00 in GMT correspond to 05:00 to 14:00 in EDT. At other times of the year, working hours of 09:00 to 18:00 in GMT correspond to 04:00 to 13:00 in EST.
GMT to PST
For most of the year, GMT is 7 hours ahead of PDT. From Nov 1, 2026 to Mar 14, 2027, GMT is 8 hours ahead of PST.
For most of the year, working hours of 9:00 am to 6:00 pm in GMT correspond to 2:00 am to 11:00 am in PDT. At other times of the year, working hours of 9:00 am to 6:00 pm in GMT correspond to 1:00 am to 10:00 am in PST.For most of the year, working hours of 09:00 to 18:00 in GMT correspond to 02:00 to 11:00 in PDT. At other times of the year, working hours of 09:00 to 18:00 in GMT correspond to 01:00 to 10:00 in PST.
Compare GMT time with CDT, EST, and PST time, including current local time, UTC offsets, time difference, daylight saving changes, working hours, and shareable meeting times.
Time Difference
Greenwich Mean Time is 5 hours ahead of Central Daylight Time. Greenwich Mean Time is 4 hours ahead of Eastern Daylight Time. Greenwich Mean Time is 7 hours ahead of Pacific Daylight Time.
3:00 pm15:00 in GMT is 10:00 am10:00 in CDT and is 11:00 am11:00 in EDT and is 8:00 am08:00 in PDT
GMT to CDT call time
Best time for a conference call or a meeting is between 2pm-6pm14:00-18:00 in GMT which corresponds to 9am-1pm09:00-13:00 in CDT
GMT to EDT call time
Best time for a conference call or a meeting is between 1pm-6pm13:00-18:00 in GMT which corresponds to 9am-2pm09:00-14:00 in EDT
GMT to PDT call time
Best time for a conference call or a meeting is between 4pm-6pm16:00-18:00 in GMT which corresponds to 9am-11am09:00-11:00 in PDT
3:00 pm15:00 Greenwich Mean Time (GMT). Offset UTC 0:00 hours
10:00 am10:00 Central Daylight Time (CDT). Offset UTC -5:00 hours
11:00 am11:00 Eastern Daylight Time (EDT). Offset UTC -4:00 hours
8:00 am08:00 Pacific Daylight Time (PDT). Offset UTC -7:00 hours
3:00 pm15:00 GMT / 10:00 am10:00 CDT / 11:00 am11:00 EDT / 8:00 am08:00 PDT
Choose an hour to update the converter. Day labels such as “next day” or “+1” are relative to the selected date in the first column. Use Up and Down arrow keys, Home or End to move between hours, then Enter or Space to select.
| GMT | CDT | EDT | PDT |
|---|---|---|---|
| 7:00pm previous day | 8:00pm previous day | 5:00pm previous day | |
| 8:00pm previous day | 9:00pm previous day | 6:00pm previous day | |
| 9:00pm previous day | 10:00pm previous day | 7:00pm previous day | |
| 10:00pm previous day | 11:00pm previous day | 8:00pm previous day | |
| 11:00pm previous day | 12:00am | 9:00pm previous day | |
| 12:00am | 1:00am | 10:00pm previous day | |
| 1:00am | 2:00am | 11:00pm previous day | |
| 2:00am | 3:00am | 12:00am | |
| 3:00am | 4:00am | 1:00am | |
| 4:00am | 5:00am | 2:00am | |
| 5:00am | 6:00am | 3:00am | |
| 6:00am | 7:00am | 4:00am | |
| 7:00am | 8:00am | 5:00am | |
| 8:00am | 9:00am | 6:00am | |
| 9:00am | 10:00am | 7:00am | |
| 10:00am | 11:00am | 8:00am | |
| 11:00am | 12:00pm | 9:00am | |
| 12:00pm | 1:00pm | 10:00am | |
| 1:00pm | 2:00pm | 11:00am | |
| 2:00pm | 3:00pm | 12:00pm | |
| 3:00pm | 4:00pm | 1:00pm | |
| 4:00pm | 5:00pm | 2:00pm | |
| 5:00pm | 6:00pm | 3:00pm | |
| 6:00pm | 7:00pm | 4:00pm | |
| 19:00 previous day | 20:00 previous day | 17:00 previous day | |
| 20:00 previous day | 21:00 previous day | 18:00 previous day | |
| 21:00 previous day | 22:00 previous day | 19:00 previous day | |
| 22:00 previous day | 23:00 previous day | 20:00 previous day | |
| 23:00 previous day | 00:00 | 21:00 previous day | |
| 00:00 | 01:00 | 22:00 previous day | |
| 01:00 | 02:00 | 23:00 previous day | |
| 02:00 | 03:00 | 00:00 | |
| 03:00 | 04:00 | 01:00 | |
| 04:00 | 05:00 | 02:00 | |
| 05:00 | 06:00 | 03:00 | |
| 06:00 | 07:00 | 04:00 | |
| 07:00 | 08:00 | 05:00 | |
| 08:00 | 09:00 | 06:00 | |
| 09:00 | 10:00 | 07:00 | |
| 10:00 | 11:00 | 08:00 | |
| 11:00 | 12:00 | 09:00 | |
| 12:00 | 13:00 | 10:00 | |
| 13:00 | 14:00 | 11:00 | |
| 14:00 | 15:00 | 12:00 | |
| 15:00 | 16:00 | 13:00 | |
| 16:00 | 17:00 | 14:00 | |
| 17:00 | 18:00 | 15:00 | |
| 18:00 | 19:00 | 16:00 |
Greenwich Mean Time
Offset: GMT is the same as Greenwich Mean Time (GMT).
Countries using this time zone: Antarctica, Burkina Faso, Gambia, Ghana, Greenland, Guernsey, Guinea, Guinea-Bissau, Iceland, Ireland, Isle of Man, Ivory Coast, Jersey, Liberia, Mali, Mauritania, Morocco, Saint Helena, São Tomé and Príncipe, Senegal, Sierra Leone, Togo, United Kingdom, Western Sahara
Principal Cities: The largest city in the GMT time zone is London in the United Kingdom, with about 8.962 million people. Other major cities in this time zone include Abidjan, Bamako, Casablanca, Dakar.
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 the two are the same. In the military, GMT is known as Zulu time. Greenwich Mean Time was the same as Universal Time (UT), a standard astronomical concept used in many technical fields, until the introduction of UTC in 1972.
On September 13, 2017 some shaded areas are on UTC+1 (British Summer Time, Irish Standard Time).
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 - Coordinated Universal Time
- WT - Western Sahara Standard Time
- Z - Zulu Time Zone
Central Daylight Time
Offset: CDT is 5 hours behind Greenwich Mean Time (GMT).
Countries using this time zone: Canada, Mexico, United States
Principal Cities: The largest city in the CDT time zone is Chicago in the United States, with about 2.664 million people. Other major cities in this time zone include Houston, San Antonio, Dallas, Fort Worth.
French: HAC - Heure Avancée du Centre
Spanish: CT - Zona Centro
On September 13, 2017 some of the shaded areas are on UTC−6 (MDT).
Daylight Saving: Central Daylight Time (CDT) is a daylight saving/summer time zone. During winter, some places set clocks back one hour and observe Central Standard Time (CST).
Start: Central Daylight Time (CDT) started on Sunday, March 12, 2017 at 2:00 am02:00 local time and clocks were set one hour forward to Sunday, March 12, 2017, 3:00 am03:00. Daylight saving starts annually on the second Sunday of March.
End: Central Daylight Time (CDT) ends on Sunday, November 5, 2017 at 2:00 am02:00 local time and clocks are set one hour back to Sunday, November 5, 2017, 1:00 am01:00 local standard time instead. Daylight saving ends annually on the first Sunday of November.
See USA daylight saving time and upcoming clock changes worldwide.
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 an offset of five hours 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
Eastern Standard Time
Offset: EST is 5 hours behind Greenwich Mean Time (GMT).
Countries using this time zone: Bahamas, Canada, Cayman Islands, Haiti, Jamaica, Mexico, Panama, Turks and Caicos Islands, 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, Montréal, Philadelphia, Port-au-Prince.
French: HNE - Heure Normale de l'Est
Spanish: ET - Tiempo del Este, ET - Zona Sureste
On September 13, 2017 the lighter areas are on UTC−4 (Atlantic Standard Time, EDT).
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).
End: Eastern Standard Time (EST) ended on Sunday, March 12, 2017 at 2:00 am02:00 local time and clocks were set one hour forward to Sunday, March 12, 2017, 3:00 am03:00 local daylight time instead. Standard time ends annually on the second Sunday of March.
Start: Eastern Standard Time (EST) starts on Sunday, November 5, 2017 at 2:00 am02:00 local time and clocks are set one hour back to Sunday, November 5, 2017, 1:00 am01:00. Standard time starts annually on the first Sunday of November.
See USA daylight saving time and upcoming clock changes worldwide.
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
Pacific Standard Time
Offset: PST is 8 hours behind Greenwich Mean Time (GMT).
Countries using this time zone: Mexico, United States
Principal Cities: The largest city in the PST 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: HNP - Heure Normale du Pacifique
Spanish: PT - Tiempo del Pacífico, PT - Zona Noroeste
On September 13, 2017 the shaded areas are on UTC−7 (PDT).
Daylight Saving: This is a standard time zone. During summer, some places set clocks forward one hour for daylight saving time and observe Pacific Daylight Time (PDT).
End: Pacific Standard Time (PST) ended on Sunday, March 12, 2017 at 2:00 am02:00 local time and clocks were set one hour forward to Sunday, March 12, 2017, 3:00 am03:00 local daylight time instead. Standard time ends annually on the second Sunday of March.
Start: Pacific Standard Time (PST) starts on Sunday, November 5, 2017 at 2:00 am02:00 local time and clocks are set one hour back to Sunday, November 5, 2017, 1:00 am01:00. Standard time starts annually on the first Sunday of November.
See USA daylight saving time and upcoming clock changes worldwide.
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 an offset of eight hours 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
- AKDT - Alaska Daylight Time
- PST - Pacific Standard Time
- PT - Pacific Time
- PST - Pitcairn Standard Time
- U - Uniform Time Zone