CEST to EEST to EST to PDT to ACDT to GMT Time Converter
The United Kingdom is on summer time: BST (UTC+1) until Sun, Oct 25.
Iceland and Ghana stay on GMT (UTC+0).
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12:30 pm12:30 CEST (UTC+2), Oct 24, 2026 = 1:30 pm13:30 EEST (UTC+3), Oct 24, 2026 = 6:30 am06:30 EDT (UTC-4), Oct 24, 2026 = 3:30 am03:30 PDT (UTC-7), Oct 24, 2026 = 9:00 pm21:00 ACDT (UTC+10:30), Oct 24, 2026 = 10:30 am10:30 GMT (UTC+0), Oct 24, 2026
CEST is 1 hour behind EEST. CEST is 6 hours ahead of EDT. CEST is 9 hours ahead of PDT. CEST is 8 hours and 30 minutes behind ACDT. CEST is 2 hours ahead of GMT.
How the time difference changes
CEST to EEST
For most of the year, CEST is 1 hour behind EEST. From Oct 25, 2026 to Mar 28, 2027, CET is 1 hour behind EET.
For most of the year, working hours of 9:00 am to 6:00 pm in CEST correspond to 10:00 am to 7:00 pm in EEST. At other times of the year, working hours of 9:00 am to 6:00 pm in CET correspond to 10:00 am to 7:00 pm in EET.For most of the year, working hours of 09:00 to 18:00 in CEST correspond to 10:00 to 19:00 in EEST. At other times of the year, working hours of 09:00 to 18:00 in CET correspond to 10:00 to 19:00 in EET.
CEST to EST
For most of the year, CEST is 6 hours ahead of EDT. From Oct 25 to Nov 1, 2026, and from Mar 14 to Mar 28, 2027, CET is 5 hours ahead of EDT. From Nov 1, 2026 to Mar 14, 2027, CET is 6 hours ahead of EST.
For most of the year, working hours of 9:00 am to 6:00 pm in CEST correspond to 3:00 am to 12:00 pm in EDT. At other times of the year, working hours of 9:00 am to 6:00 pm in CET correspond to 3:00 am to 12:00 pm in EST or working hours of 9:00 am to 6:00 pm in CET correspond to 4:00 am to 1:00 pm in EDT.For most of the year, working hours of 09:00 to 18:00 in CEST correspond to 03:00 to 12:00 in EDT. At other times of the year, working hours of 09:00 to 18:00 in CET correspond to 03:00 to 12:00 in EST or working hours of 09:00 to 18:00 in CET correspond to 04:00 to 13:00 in EDT.
CEST to PDT
For most of the year, CEST is 9 hours ahead of PDT. From Oct 25 to Nov 1, 2026, and from Mar 14 to Mar 28, 2027, CET is 8 hours ahead of PDT. From Nov 1, 2026 to Mar 14, 2027, CET is 9 hours ahead of PST.
For most of the year, working hours of 9:00 am to 6:00 pm in CEST correspond to 12:00 am to 9:00 am in PDT. At other times of the year, working hours of 9:00 am to 6:00 pm in CET correspond to 12:00 am to 9:00 am in PST or working hours of 9:00 am to 6:00 pm in CET correspond to 1:00 am to 10:00 am in PDT.For most of the year, working hours of 09:00 to 18:00 in CEST correspond to 00:00 to 09:00 in PDT. At other times of the year, working hours of 09:00 to 18:00 in CET correspond to 00:00 to 09:00 in PST or working hours of 09:00 to 18:00 in CET correspond to 01:00 to 10:00 in PDT.
CEST to ACDT
Depending on seasonal clock changes, CEST is 7 hours and 30 minutes behind ACST, CEST is 8 hours and 30 minutes behind ACDT, or CET is 9 hours and 30 minutes behind ACDT.
Depending on seasonal clock changes, working hours of 9:00 am to 6:00 pm in CEST correspond to 4:30 pm to 1:30 am (next day) in ACST, working hours of 9:00 am to 6:00 pm in CEST correspond to 5:30 pm to 2:30 am (next day) in ACDT, or working hours of 9:00 am to 6:00 pm in CET correspond to 6:30 pm to 3:30 am (next day) in ACDT.Depending on seasonal clock changes, working hours of 09:00 to 18:00 in CEST correspond to 16:30 to 01:30 (next day) in ACST, working hours of 09:00 to 18:00 in CEST correspond to 17:30 to 02:30 (next day) in ACDT, or working hours of 09:00 to 18:00 in CET correspond to 18:30 to 03:30 (next day) in ACDT.
CEST to GMT
For most of the year, CEST is 2 hours ahead of GMT. From Oct 25, 2026 to Mar 28, 2027, CET is 1 hour ahead of GMT.
For most of the year, working hours of 9:00 am to 6:00 pm in CEST correspond to 7:00 am to 4:00 pm in GMT. At other times of the year, working hours of 9:00 am to 6:00 pm in CET correspond to 8:00 am to 5:00 pm in GMT.For most of the year, working hours of 09:00 to 18:00 in CEST correspond to 07:00 to 16:00 in GMT. At other times of the year, working hours of 09:00 to 18:00 in CET correspond to 08:00 to 17:00 in GMT.
Compare CEST time with EEST, EST, PDT, ACDT, and GMT time, including current local time, UTC offsets, time difference, daylight saving changes, working hours, and shareable meeting times.
Time Difference
Central European Summer Time is 1 hour behind Eastern European Summer Time. Central European Summer Time is 6 hours ahead of Eastern Daylight Time. Central European Summer Time is 9 hours ahead of Pacific Daylight Time. Central European Summer Time is 8 hours and 30 minutes behind Australian Central Daylight Time. Central European Summer Time is 2 hours ahead of Greenwich Mean Time.
12:30 pm12:30 in CEST is 1:30 pm13:30 in EEST and is 6:30 am06:30 in EDT and is 3:30 am03:30 in PDT and is 9:00 pm21:00 in ACDT and is 10:30 am10:30 in GMT
CEST to EEST call time
Best time for a conference call or a meeting is between 9am-5pm09:00-17:00 in CEST which corresponds to 10am-6pm10:00-18:00 in EEST
CEST to EDT call time
Best time for a conference call or a meeting is between 3pm-6pm15:00-18:00 in CEST which corresponds to 9am-12pm09:00-12:00 in EDT
CEST to PDT call time
Best time for a conference call or a meeting is between 5:30pm-6:30pm17:30-18:30 in CEST which corresponds to 8:30am-9:30am08:30-09:30 in PDT. Their 9am–6pm09:00–18:00 working hours do not overlap; this is a suggested compromise.
CEST to ACDT call time
Best time for a conference call or a meeting is between 9am-9:30am09:00-09:30 in CEST which corresponds to 5:30pm-6pm17:30-18:00 in ACDT
CEST to GMT call time
Best time for a conference call or a meeting is between 11am-6pm11:00-18:00 in CEST which corresponds to 9am-4pm09:00-16:00 in GMT
12:30 pm12:30 Central European Summer Time (CEST). Offset UTC +2:00 hours
1:30 pm13:30 Eastern European Summer Time (EEST). Offset UTC +3:00 hours
6:30 am06:30 Eastern Daylight Time (EDT). Offset UTC -4:00 hours
3:30 am03:30 Pacific Daylight Time (PDT). Offset UTC -7:00 hours
9:00 pm21:00 Australian Central Daylight Time (ACDT). Offset UTC +10:30 hours
10:30 am10:30 Greenwich Mean Time (GMT). Offset UTC 0:00 hours
12:30 pm12:30 CEST / 1:30 pm13:30 EEST / 6:30 am06:30 EDT / 3:30 am03:30 PDT / 9:00 pm21:00 ACDT / 10:30 am10:30 GMT
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.
| CEST | EEST | EDT | PDT | ACDT | GMT |
|---|---|---|---|---|---|
| 1:00am | 6:00pm previous day | 3:00pm previous day | 8:30am | 10:00pm previous day | |
| 2:00am | 7:00pm previous day | 4:00pm previous day | 9:30am | 11:00pm previous day | |
| 3:00am | 8:00pm previous day | 5:00pm previous day | 10:30am | 12:00am | |
| 4:00am | 9:00pm previous day | 6:00pm previous day | 11:30am | 1:00am | |
| 5:00am | 10:00pm previous day | 7:00pm previous day | 12:30pm | 2:00am | |
| 6:00am | 11:00pm previous day | 8:00pm previous day | 1:30pm | 3:00am | |
| 7:00am | 12:00am | 9:00pm previous day | 2:30pm | 4:00am | |
| 8:00am | 1:00am | 10:00pm previous day | 3:30pm | 5:00am | |
| 9:00am | 2:00am | 11:00pm previous day | 4:30pm | 6:00am | |
| 10:00am | 3:00am | 12:00am | 5:30pm | 7:00am | |
| 11:00am | 4:00am | 1:00am | 6:30pm | 8:00am | |
| 12:00pm | 5:00am | 2:00am | 7:30pm | 9:00am | |
| 1:00pm | 6:00am | 3:00am | 8:30pm | 10:00am | |
| 2:00pm | 7:00am | 4:00am | 9:30pm | 11:00am | |
| 3:00pm | 8:00am | 5:00am | 10:30pm | 12:00pm | |
| 4:00pm | 9:00am | 6:00am | 11:30pm | 1:00pm | |
| 5:00pm | 10:00am | 7:00am | 12:30am next day | 2:00pm | |
| 6:00pm | 11:00am | 8:00am | 1:30am next day | 3:00pm | |
| 7:00pm | 12:00pm | 9:00am | 2:30am next day | 4:00pm | |
| 8:00pm | 1:00pm | 10:00am | 3:30am next day | 5:00pm | |
| 9:00pm | 2:00pm | 11:00am | 4:30am next day | 6:00pm | |
| 10:00pm | 3:00pm | 12:00pm | 5:30am next day | 7:00pm | |
| 11:00pm | 4:00pm | 1:00pm | 6:30am next day | 8:00pm | |
| 12:00am next day | 5:00pm | 2:00pm | 7:30am next day | 9:00pm | |
| 01:00 | 18:00 previous day | 15:00 previous day | 08:30 | 22:00 previous day | |
| 02:00 | 19:00 previous day | 16:00 previous day | 09:30 | 23:00 previous day | |
| 03:00 | 20:00 previous day | 17:00 previous day | 10:30 | 00:00 | |
| 04:00 | 21:00 previous day | 18:00 previous day | 11:30 | 01:00 | |
| 05:00 | 22:00 previous day | 19:00 previous day | 12:30 | 02:00 | |
| 06:00 | 23:00 previous day | 20:00 previous day | 13:30 | 03:00 | |
| 07:00 | 00:00 | 21:00 previous day | 14:30 | 04:00 | |
| 08:00 | 01:00 | 22:00 previous day | 15:30 | 05:00 | |
| 09:00 | 02:00 | 23:00 previous day | 16:30 | 06:00 | |
| 10:00 | 03:00 | 00:00 | 17:30 | 07:00 | |
| 11:00 | 04:00 | 01:00 | 18:30 | 08:00 | |
| 12:00 | 05:00 | 02:00 | 19:30 | 09:00 | |
| 13:00 | 06:00 | 03:00 | 20:30 | 10:00 | |
| 14:00 | 07:00 | 04:00 | 21:30 | 11:00 | |
| 15:00 | 08:00 | 05:00 | 22:30 | 12:00 | |
| 16:00 | 09:00 | 06:00 | 23:30 | 13:00 | |
| 17:00 | 10:00 | 07:00 | 00:30 next day | 14:00 | |
| 18:00 | 11:00 | 08:00 | 01:30 next day | 15:00 | |
| 19:00 | 12:00 | 09:00 | 02:30 next day | 16:00 | |
| 20:00 | 13:00 | 10:00 | 03:30 next day | 17:00 | |
| 21:00 | 14:00 | 11:00 | 04:30 next day | 18:00 | |
| 22:00 | 15:00 | 12:00 | 05:30 next day | 19:00 | |
| 23:00 | 16:00 | 13:00 | 06:30 next day | 20:00 | |
| 00:00 next day | 17:00 | 14:00 | 07:30 next day | 21:00 |
Central European Summer Time
Offset: CEST is 2 hours ahead of Greenwich Mean Time (GMT).
Countries using this time zone: Albania, Andorra, Austria, Belgium, Bosnia and Herzegovina, Croatia, Czechia, Denmark, France, Germany, Gibraltar, Hungary, Italy, Kosovo, Liechtenstein, Luxembourg, Malta, Monaco, Montenegro, Netherlands, North Macedonia, Norway, Poland, San Marino, Serbia, Slovakia, Slovenia, Spain, Svalbard and Jan Mayen, Sweden, Switzerland, 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, Hamburg.
German: MESZ - Mitteleuropäische Sommerzeit
Today all shaded areas are on CEST.
Daylight Saving: Central European Summer Time (CEST) is a daylight saving/summer time zone. During winter, some places set clocks back one hour and observe Central European Time (CET).
Start: Central European Summer Time (CEST) started on Sunday, March 29, 2026 at 2:00 am02:00 local time and clocks were set one hour forward to Sunday, March 29, 2026, 3:00 am03:00. Daylight saving starts annually on the last Sunday of March.
End: Central European Summer Time (CEST) ends on Sunday, October 25, 2026 at 3:00 am03:00 local time and clocks are set one hour back to Sunday, October 25, 2026, 2:00 am02:00 local standard time instead. Daylight saving ends annually on the last Sunday of October.
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
Eastern European Summer Time
Offset: EEST is 3 hours ahead of Greenwich Mean Time (GMT).
Countries using this time zone: Åland Islands, Bulgaria, Cyprus, Egypt, Estonia, Finland, Greece, Latvia, Lebanon, Lithuania, Moldova, Palestinian Territory, Romania, Ukraine
Principal Cities: The largest city in the EEST time zone is Cairo in Egypt, with about 9.607 million people. Other major cities in this time zone include Alexandria, Giza, Kyiv, Beirut.
German: OESZ - Osteuropäische Sommerzeit
Today some of the shaded areas are on UTC+2 (EET).
Daylight Saving: Eastern European Summer Time (EEST) is a daylight saving/summer time zone. During winter, some places set clocks back one hour and observe Eastern European Time (EET).
Start: Eastern European Summer Time (EEST) started on Sunday, March 29, 2026 at 3:00 am03:00 local time and clocks were set one hour forward to Sunday, March 29, 2026, 4:00 am04:00. Daylight saving starts annually on the last Sunday of March.
End: Eastern European Summer Time (EEST) ends on Sunday, October 25, 2026 at 4:00 am04:00 local time and clocks are set one hour back to Sunday, October 25, 2026, 3:00 am03:00 local standard time instead. Daylight saving ends annually on the last Sunday of October.
EEST representations, usage and related time zones
- +03 - basic short
- +0300 - basic
- +03:00 - extended
- +0300 - sign character (+) followed by a four digit time providing hours (03) and minutes (00) of the offset. Indicates an offset of three hours to the east of the zero meridian.
- Charlie - Military abbreviation for EEST
- C - short form of 'Charlie'
- Africa/Cairo
- Asia/Beirut
- Asia/Famagusta
- Asia/Gaza
- Asia/Hebron
- Asia/Nicosia
- EET
- Egypt
- Europe/Athens
- Europe/Bucharest
- Europe/Chisinau
- Europe/Helsinki
- Europe/Kiev
- Europe/Kyiv
- Europe/Mariehamn
- Europe/Nicosia
- Europe/Riga
- Europe/Sofia
- Europe/Tallinn
- Europe/Tiraspol
- Europe/Uzhgorod
- Europe/Vilnius
- Europe/Zaporozhye
- EEST - Eastern European Summer Time
- MSK - Moscow Standard Time
- AST - Arabia Standard Time
- C - Charlie Time Zone
- EAT - Eastern Africa Time
- FET - Further Eastern European Time
- IDT - Israel Daylight Time
- TRT - Turkey Time
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
Today the lighter areas are on UTC−4 (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 8, 2026 at 2:00 am02:00 local time and clocks were set one hour forward to Sunday, March 8, 2026, 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 1, 2026 at 2:00 am02:00 local time and clocks are set one hour back to Sunday, November 1, 2026, 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 Daylight Time
Offset: PDT is 7 hours behind Greenwich Mean Time (GMT).
Countries using this time zone: 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
Today all shaded areas are on PDT.
Daylight Saving: Pacific Daylight Time (PDT) is a daylight saving/summer time zone. During winter, some places set clocks back one hour and observe Pacific Standard Time (PST).
Start: Pacific Daylight Time (PDT) started on Sunday, March 8, 2026 at 2:00 am02:00 local time and clocks were set one hour forward to Sunday, March 8, 2026, 3:00 am03:00. Daylight saving starts annually on the second Sunday of March.
End: Pacific Daylight Time (PDT) ends on Sunday, November 1, 2026 at 2:00 am02:00 local time and clocks are set one hour back to Sunday, November 1, 2026, 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.
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
Australian Central Daylight Time
Offset: ACDT is 10 hours and 30 minutes ahead of Greenwich Mean Time (GMT).
Countries using this time zone: Australia
Principal Cities: The largest city in the ACDT time zone is Adelaide in Australia, with about 1.469 million people. Other major cities in this time zone include Mount Gambier, Mount Barker, Whyalla, Gawler.
Today all shaded areas are on ACDT.
Daylight Saving: Australian Central Daylight Time (ACDT) is a daylight saving/summer time zone. During winter, some places set clocks back one hour and observe Australian Central Standard Time (ACST).
Start: Australian Central Daylight Time (ACDT) started on Sunday, October 4, 2026 at 2:00 am02:00 local time and clocks were set one hour forward to Sunday, October 4, 2026, 3:00 am03:00. Daylight saving starts annually on the first Sunday of October.
End: Australian Central Daylight Time (ACDT) ends on Sunday, April 4, 2027 at 3:00 am03:00 local time and clocks are set one hour back to Sunday, April 4, 2027, 2:00 am02:00 local standard time instead. Daylight saving ends annually on the first Sunday of April.
See Australia daylight saving time and upcoming clock changes worldwide.
ACDT representations, usage and related time zones
- +1030 - basic
- +10:30 - extended
- +1030 - sign character (+) followed by a four digit time providing hours (10) and minutes (30) of the offset. Indicates an offset of ten hours and thirty minutes to the east of the zero meridian.
- Australia/Adelaide
- Australia/Broken_Hill
- Australia/South
- Australia/Yancowinna
- ACDT - Australian Central Daylight Time
- LHST - Lord Howe Standard Time
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.
Today the lighter 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