Adelaide to GMT to AEST to CET to CDT to EST Time Converter

Updating current time…
Adelaide
AustraliaACDT
UTC+10:30
12am
3am
6am
9am
12pm
3pm
6pm
9pm
GMT
Greenwich Mean Time
UTC+0
10h 30m behind
12am
3am
6am
9am
12pm
3pm
6pm
9pm
AEST
Australian Eastern Standard Time
UTC+10
30m behind
12am
3am
6am
9am
12pm
3pm
6pm
9pm
Eastern Australia is on daylight saving time: AEDT (UTC+11) until Sun, Apr 4, 2027.

Queensland stays on AEST (UTC+10).

Queensland · AEST all year (UTC+10)Sydney, Melbourne · AEDT (UTC+11)
CET
Central European Time
UTC+1
9h 30m behind
12am
3am
6am
9am
12pm
3pm
6pm
9pm
CST/CDT
Central Standard Time
UTC−6
16h 30m behind
12am
3am
6am
9am
12pm
3pm
6pm
9pm
Central Time is on standard time: CST (UTC−6) until Sun, Mar 14, 2027.
Keep CDT (UTC−5)
EST
Eastern Standard Time
UTC−5
15h 30m behind
12am
3am
6am
9am
12pm
3pm
6pm
9pm

Quick answers

Selected conversion

10:30 pm22:30 ACDT (UTC+10:30), Nov 8, 2026 = 12:00 pm12:00 GMT (UTC+0), Nov 8, 2026 = 10:00 pm22:00 AEST (UTC+10), Nov 8, 2026 = 1:00 pm13:00 CET (UTC+1), Nov 8, 2026 = 6:00 am06:00 CST (UTC-6), Nov 8, 2026 = 7:00 am07:00 EST (UTC-5), Nov 8, 2026

Adelaide is 10 hours and 30 minutes ahead of GMT. Adelaide is 30 minutes ahead of AEST. Adelaide is 9 hours and 30 minutes ahead of CET. Adelaide is 16 hours and 30 minutes ahead of CST. Adelaide is 15 hours and 30 minutes ahead of EST.

How the time difference changes

Adelaide to GMT

Depending on seasonal clock changes, Adelaide is 9 hours and 30 minutes ahead of GMT or Adelaide is 10 hours and 30 minutes ahead of GMT.

Depending on seasonal clock changes, working hours of 9:00 am to 6:00 pm in Adelaide correspond to 11:30 pm (previous day) to 8:30 am in GMT or working hours of 9:00 am to 6:00 pm in Adelaide correspond to 10:30 pm (previous day) to 7:30 am in GMT.Depending on seasonal clock changes, working hours of 09:00 to 18:00 in Adelaide correspond to 23:30 (previous day) to 08:30 in GMT or working hours of 09:00 to 18:00 in Adelaide correspond to 22:30 (previous day) to 07:30 in GMT.

Adelaide to AEST

Depending on seasonal clock changes, Adelaide is 30 minutes ahead of AEST or Adelaide is 30 minutes behind AEST.

Depending on seasonal clock changes, working hours of 9:00 am to 6:00 pm in Adelaide correspond to 8:30 am to 5:30 pm in AEST or working hours of 9:00 am to 6:00 pm in Adelaide correspond to 9:30 am to 6:30 pm in AEST.Depending on seasonal clock changes, working hours of 09:00 to 18:00 in Adelaide correspond to 08:30 to 17:30 in AEST or working hours of 09:00 to 18:00 in Adelaide correspond to 09:30 to 18:30 in AEST.

Adelaide to CET

Depending on seasonal clock changes, Adelaide is 7 hours and 30 minutes ahead of CEST, Adelaide is 8 hours and 30 minutes ahead of CEST, or Adelaide is 9 hours and 30 minutes ahead of CET.

Depending on seasonal clock changes, working hours of 9:00 am to 6:00 pm in Adelaide correspond to 1:30 am to 10:30 am in CEST, working hours of 9:00 am to 6:00 pm in Adelaide correspond to 12:30 am to 9:30 am in CEST, or working hours of 9:00 am to 6:00 pm in Adelaide correspond to 11:30 pm (previous day) to 8:30 am in CET.Depending on seasonal clock changes, working hours of 09:00 to 18:00 in Adelaide correspond to 01:30 to 10:30 in CEST, working hours of 09:00 to 18:00 in Adelaide correspond to 00:30 to 09:30 in CEST, or working hours of 09:00 to 18:00 in Adelaide correspond to 23:30 (previous day) to 08:30 in CET.

Adelaide to CDT

Depending on seasonal clock changes, Adelaide is 14 hours and 30 minutes ahead of CDT, Adelaide is 15 hours and 30 minutes ahead of CDT, or Adelaide is 16 hours and 30 minutes ahead of CST.

Depending on seasonal clock changes, working hours of 9:00 am to 6:00 pm in Adelaide correspond to 6:30 pm (previous day) to 3:30 am in CDT, working hours of 9:00 am to 6:00 pm in Adelaide correspond to 5:30 pm (previous day) to 2:30 am in CDT, or working hours of 9:00 am to 6:00 pm in Adelaide correspond to 4:30 pm (previous day) to 1:30 am in CST.Depending on seasonal clock changes, working hours of 09:00 to 18:00 in Adelaide correspond to 18:30 (previous day) to 03:30 in CDT, working hours of 09:00 to 18:00 in Adelaide correspond to 17:30 (previous day) to 02:30 in CDT, or working hours of 09:00 to 18:00 in Adelaide correspond to 16:30 (previous day) to 01:30 in CST.

Adelaide to EST

Depending on seasonal clock changes, Adelaide is 13 hours and 30 minutes ahead of EDT, Adelaide is 14 hours and 30 minutes ahead of EDT, or Adelaide is 15 hours and 30 minutes ahead of EST.

Depending on seasonal clock changes, working hours of 9:00 am to 6:00 pm in Adelaide correspond to 7:30 pm (previous day) to 4:30 am in EDT, working hours of 9:00 am to 6:00 pm in Adelaide correspond to 6:30 pm (previous day) to 3:30 am in EDT, or working hours of 9:00 am to 6:00 pm in Adelaide correspond to 5:30 pm (previous day) to 2:30 am in EST.Depending on seasonal clock changes, working hours of 09:00 to 18:00 in Adelaide correspond to 19:30 (previous day) to 04:30 in EDT, working hours of 09:00 to 18:00 in Adelaide correspond to 18:30 (previous day) to 03:30 in EDT, or working hours of 09:00 to 18:00 in Adelaide correspond to 17:30 (previous day) to 02:30 in EST.

Compare Adelaide time with GMT, AEST, CET, CDT, and EST time, including current local time, UTC offsets, time difference, daylight saving changes, working hours, and shareable meeting times.

Time Difference

ACDT (Australian Central Daylight Time) is 10 hours and 30 minutes ahead of Greenwich Mean Time. ACDT (Australian Central Daylight Time) is 30 minutes ahead of Australian Eastern Standard Time. ACDT (Australian Central Daylight Time) is 9 hours and 30 minutes ahead of Central European Time. ACDT (Australian Central Daylight Time) is 16 hours and 30 minutes ahead of Central Standard Time. ACDT (Australian Central Daylight Time) is 15 hours and 30 minutes ahead of Eastern Standard Time.
10:30 pm22:30 in Adelaide, Australia is 12:00 pm12:00 in GMT and is 10:00 pm22:00 in AEST and is 1:00 pm13:00 in CET and is 6:00 am06:00 in CST and is 7:00 am07:00 in EST

Adelaide to GMT call time
Best time for a conference call or a meeting is between 6:30pm-7:30pm18:30-19:30 in Adelaide which corresponds to 8am-9am08:00-09:00 in GMT. Their 9am–6pm09:00–18:00 working hours do not overlap; this is a suggested compromise.
Adelaide to AEST call time
Best time for a conference call or a meeting is between 9:30am-6pm09:30-18:00 in Adelaide which corresponds to 9am-5:30pm09:00-17:30 in AEST.
Adelaide to CET call time
Best time for a conference call or a meeting is between 6pm-7pm18:00-19:00 in Adelaide which corresponds to 8:30am-9:30am08:30-09:30 in CET. Their 9am–6pm09:00–18:00 working hours do not overlap; this is a suggested compromise.
Adelaide to CST call time
Best time for a conference call or a meeting is between 9am-10:30am09:00-10:30 in Adelaide which corresponds to 4:30pm-6pm16:30-18:00 in CST (previous day).
Adelaide to EST call time
Best time for a conference call or a meeting is between 9am-9:30am09:00-09:30 in Adelaide which corresponds to 5:30pm-6pm17:30-18:00 in EST (previous day).

10:30 pm22:30 ACDT (Australian Central Daylight Time) (Adelaide, Australia). Offset UTC +10:30 hours
12:00 pm12:00 Greenwich Mean Time (GMT). Offset UTC 0:00 hours
10:00 pm22:00 Australian Eastern Standard Time (AEST). Offset UTC +10:00 hours
1:00 pm13:00 Central European Time (CET). Offset UTC +1:00 hour
6:00 am06:00 Central Standard Time (CST). Offset UTC -6:00 hours
7:00 am07:00 Eastern Standard Time (EST). Offset UTC -5:00 hours

10:30 pm22:30 Adelaide, Australia / 12:00 pm12:00 GMT / 10:00 pm22:00 AEST / 1:00 pm13:00 CET / 6:00 am06:00 CST / 7:00 am07:00 EST

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.

Hourly time comparison
Adelaide, AustraliaGMTAESTCETCSTEST
1:30pm previous day11:30pm previous day2:30pm previous day7:30am previous day8:30am previous day
2:30pm previous day12:30am3:30pm previous day8:30am previous day9:30am previous day
3:30pm previous day1:30am4:30pm previous day9:30am previous day10:30am previous day
4:30pm previous day2:30am5:30pm previous day10:30am previous day11:30am previous day
5:30pm previous day3:30am6:30pm previous day11:30am previous day12:30pm previous day
6:30pm previous day4:30am7:30pm previous day12:30pm previous day1:30pm previous day
7:30pm previous day5:30am8:30pm previous day1:30pm previous day2:30pm previous day
8:30pm previous day6:30am9:30pm previous day2:30pm previous day3:30pm previous day
9:30pm previous day7:30am10:30pm previous day3:30pm previous day4:30pm previous day
10:30pm previous day8:30am11:30pm previous day4:30pm previous day5:30pm previous day
11:30pm previous day9:30am12:30am5:30pm previous day6:30pm previous day
12:30am10:30am1:30am6:30pm previous day7:30pm previous day
1:30am11:30am2:30am7:30pm previous day8:30pm previous day
2:30am12:30pm3:30am8:30pm previous day9:30pm previous day
3:30am1:30pm4:30am9:30pm previous day10:30pm previous day
4:30am2:30pm5:30am10:30pm previous day11:30pm previous day
5:30am3:30pm6:30am11:30pm previous day12:30am
6:30am4:30pm7:30am12:30am1:30am
7:30am5:30pm8:30am1:30am2:30am
8:30am6:30pm9:30am2:30am3:30am
9:30am7:30pm10:30am3:30am4:30am
10:30am8:30pm11:30am4:30am5:30am
11:30am9:30pm12:30pm5:30am6:30am
12:30pm10:30pm1:30pm6:30am7:30am
13:30 previous day23:30 previous day14:30 previous day07:30 previous day08:30 previous day
14:30 previous day00:3015:30 previous day08:30 previous day09:30 previous day
15:30 previous day01:3016:30 previous day09:30 previous day10:30 previous day
16:30 previous day02:3017:30 previous day10:30 previous day11:30 previous day
17:30 previous day03:3018:30 previous day11:30 previous day12:30 previous day
18:30 previous day04:3019:30 previous day12:30 previous day13:30 previous day
19:30 previous day05:3020:30 previous day13:30 previous day14:30 previous day
20:30 previous day06:3021:30 previous day14:30 previous day15:30 previous day
21:30 previous day07:3022:30 previous day15:30 previous day16:30 previous day
22:30 previous day08:3023:30 previous day16:30 previous day17:30 previous day
23:30 previous day09:3000:3017:30 previous day18:30 previous day
00:3010:3001:3018:30 previous day19:30 previous day
01:3011:3002:3019:30 previous day20:30 previous day
02:3012:3003:3020:30 previous day21:30 previous day
03:3013:3004:3021:30 previous day22:30 previous day
04:3014:3005:3022:30 previous day23:30 previous day
05:3015:3006:3023:30 previous day00:30
06:3016:3007:3000:3001:30
07:3017:3008:3001:3002:30
08:3018:3009:3002:3003:30
09:3019:3010:3003:3004:30
10:3020:3011:3004:3005:30
11:3021:3012:3005:3006:30
12:3022:3013:3006:3007:30

Adelaide Time Zone and Facts

Time Zone

Abbreviation / Offset
ACDT – Australian Central Daylight Time, UTC+10:30 (now, daylight saving time)
ACST – Australian Central Standard Time, UTC+9:30 (standard time)
Daylight Saving Time Ends
123456789101112Sunday, April 4, 2027 at 3:00 amSunday, April 4, 2027 at 03:00: clocks go back 1 hour to 2:00 am02:00 (ACST). DST ends on the 1st Sunday of April each year. Also called Fall Back or Winter Time.
Daylight Saving Time Starts
123456789101112Sunday, October 3, 2027 at 2:00 amSunday, October 3, 2027 at 02:00: clocks go forward 1 hour to 3:00 am03:00 (ACDT). DST starts on the 1st Sunday of October each year. Also called Spring Forward or Summer Time.
Clock Changes
Australia daylight saving time · Clock changes worldwide

Adelaide Facts

Country
Australia
Alternative Names
ADL, Adehlaida, Adelaida, Adelaidae, Adelaide, Adelaidis, Adelaidė, Adelajda, Adelajdo, Adelaïda, Adelaïde, Adelejd, Adelàida, Adélaïde, Edelaid, Tarndanya, Tarndarnya, a de lai de, adelaida, aderedo, adilaid, adiled, adlayd, adylyd, aedeulleideu, atileyit, edile'ida, edileda, Αδελαΐδα, Аделаидæ, Аделаида, Аделаїда, Аделейд, Аделејд, Адэлаіда, Ադելաիդա, אדלייד, آدلاید, أديليد, ئادېلايدې, ایڈیلیڈ, एडिलेड, ॲdaleda, ॲडलेड, એડિલેઇડ, அடிலெயிட், అడిలైడ్, ಅಡಿಲೇಡ್, അഡിലെയ്‌ഡ്, แอดิเลด, အက်ဒလိတ်မြို့, ადელაიდა, アデレード, 阿德来得, 阿德莱德, 애들레이드
Population
1,469,163
Currency
Dollar (AUD)
Geographic Coordinates
34° 55' S Latitude / 138° 35' E Longitude
International Dialing Code
+61
More About Adelaide
Adelaide local time and city facts

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.

Map of the areas on Greenwich Mean Time (GMT)
GMT all year GMT part of the year

Today all shaded areas are on GMT.

Open the world time zone map© OpenStreetMap

GMT representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • Z - is the zone designator for the zero UTC/GMT offset, also known as 'Zulu' time
  • +00 - basic short
  • +0000 - basic
  • +00:00 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • +0000 - sign character (+) followed by a four digit time providing hours (00) and minutes (00) of the offset. Indicates the zero UTC/GMT offset.
Military/NATO: Used by the U.S. military, Chinese military and others
  • Zulu - Military abbreviation for GMT
  • Z - short form of 'Zulu'
IANA/Olson: Reflects GMT time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
  • 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
Time zones with the GMT +0 offset:
  • 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

Australian Eastern Standard Time

Offset: AEST is 10 hours ahead of Greenwich Mean Time (GMT).

Countries using this time zone: Australia

Principal Cities: The largest city in the AEST time zone is Sydney in Australia, with about 5.639 million people. Other major cities in this time zone include Melbourne, Brisbane, Gold Coast, Newcastle.

Map of the areas on Australian Eastern Standard Time (AEST)
AEST all year AEST part of the year

Today the lighter areas are on UTC+11 (AEDT).

Open the world time zone map© OpenStreetMap

Daylight Saving: This is a standard time zone. During summer, some places set clocks forward one hour for daylight saving time and observe Australian Eastern Daylight Time (AEDT).

123456789101112End: Australian Eastern Standard Time (AEST) ended 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 local daylight time instead. Standard time ends annually on the first Sunday of October.

123456789101112Start: Australian Eastern Standard Time (AEST) starts 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. Standard time starts annually on the first Sunday of April.

See Australia daylight saving time and upcoming clock changes worldwide.

Australian Eastern Standard Time (AEST) is used in Queensland, Victoria, Tasmania, New South Wales (except Broken Hill), Australian Capital Territory and in folling major cities Brisbane, Sydney, Melbourne, Hobart, Canberra

Only part of Australia observe daylight saving. It is used in New South Wales, Victoria, South Australia, Tasmania, and the Australian Capital Territory. Daylight saving is not observed in Queensland, Western Australia or the Northern Territory.

AEST representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • +10 - basic short
  • +1000 - basic
  • +10:00 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • +1000 - sign character (+) followed by a four digit time providing hours (10) and minutes (00) of the offset. Indicates an offset of ten hours to the east of the zero meridian.
Military/NATO: Used by the U.S. military, Chinese military and others
  • Kilo - Military abbreviation for AEST
  • K - short form of 'Kilo'
IANA/Olson: Reflects AEST time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
  • Antarctica/Macquarie
  • Australia/ACT
  • Australia/Brisbane
  • Australia/Canberra
  • Australia/Currie
  • Australia/Hobart
  • Australia/Lindeman
  • Australia/Melbourne
  • Australia/NSW
  • Australia/Queensland
  • Australia/Sydney
  • Australia/Tasmania
  • Australia/Victoria
Time zones with the GMT +10 offset:
  • AEST - Australian Eastern Standard Time
  • CHUT - Chuuk Time
  • ChST - Chamorro Standard Time
  • K - Kilo Time Zone
  • KDT - Korea Daylight Time
  • PGT - Papua New Guinea Time
  • VLAT - Vladivostok Time
  • YAKST - Yakutsk Summer Time
  • YAPT - Yap Time

Central European Time

Offset: CET is 1 hour ahead of Greenwich Mean Time (GMT).

Countries using this time zone: Albania, Algeria, 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, Tunisia, Vatican City

Principal Cities: The largest city in the CET time zone is Berlin in Germany, with about 3.426 million people. Other major cities in this time zone include Madrid, Algiers, Rome, Paris.

German: MEZ - Mitteleuropäische Zeit

Map of the areas on Central European Time (CET)
CET all year CET part of the year

Today all shaded areas are on CET.

Open the world time zone map© OpenStreetMap

Daylight Saving: This is a standard time zone. During summer, some places set clocks forward one hour for daylight saving time and observe Central European Summer Time (CEST).

123456789101112Start: Central European Time (CET) started on Sunday, October 25, 2026 at 3:00 am03:00 local time and clocks were set one hour back to Sunday, October 25, 2026, 2:00 am02:00. Standard time starts annually on the last Sunday of October.

123456789101112End: Central European Time (CET) ends on Sunday, March 28, 2027 at 2:00 am02:00 local time and clocks are set one hour forward to Sunday, March 28, 2027, 3:00 am03:00 local daylight time instead. Standard time ends annually on the last Sunday of March.

See upcoming clock changes worldwide.

CET representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • +01 - basic short
  • +0100 - basic
  • +01:00 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • +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.
Military/NATO: Used by the U.S. military, Chinese military and others
  • Alpha - Military abbreviation for CET
  • A - short form of 'Alpha'
IANA/Olson: Reflects CET time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
  • Africa/Algiers
  • Africa/Ceuta
  • Africa/Tunis
  • 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
Time zones with the GMT +1 offset:
  • 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 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

Map of the areas on Central Daylight Time (CDT)
CDT part of the year

Today the shaded areas are on UTC−6 (Central Standard Time).

Open the world time zone map© OpenStreetMap

Daylight Saving: Central Daylight Time (CDT) is a daylight saving/summer time zone, but some places set clocks back one hour during winter and observe Central Standard Time (CST).

123456789101112End: Central Daylight Time (CDT) ended on Sunday, November 1, 2026 at 2:00 am02:00 local time and clocks were 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.

123456789101112Start: Central Daylight Time (CDT) starts on Sunday, March 14, 2027 at 2:00 am02:00 local time and clocks are set one hour forward to Sunday, March 14, 2027, 3:00 am03:00. Daylight saving starts annually on the second Sunday of March.

See USA daylight saving time and upcoming clock changes worldwide.

CDT representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • -05 - basic short
  • -0500 - basic
  • -05:00 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • -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.
Military/NATO: Used by the U.S. military, Chinese military and others
  • Romeo - Military abbreviation for CDT
  • R - short form of 'Romeo'
IANA/Olson: Reflects CDT time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
  • 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
CDT Abbreviation: Several time zones share CDT abbreviation and it could refer to these time zones
  • Central Daylight Time - UTC -5
  • Cuba Daylight Time - UTC -4
Time zones with the GMT -5 offset:
  • 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

Map of the areas on Eastern Standard Time (EST)
EST all year EST part of the year

Today all shaded areas are on EST.

Open the world time zone map© OpenStreetMap

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).

123456789101112Start: Eastern Standard Time (EST) started on Sunday, November 1, 2026 at 2:00 am02:00 local time and clocks were set one hour back to Sunday, November 1, 2026, 1:00 am01:00. Standard time starts annually on the first Sunday of November.

123456789101112End: Eastern Standard Time (EST) ends on Sunday, March 14, 2027 at 2:00 am02:00 local time and clocks are set one hour forward to Sunday, March 14, 2027, 3:00 am03:00 local daylight time instead. Standard time ends annually on the second Sunday of March.

See USA daylight saving time and upcoming clock changes worldwide.

EST representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • -05 - basic short
  • -0500 - basic
  • -05:00 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • -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.
Military/NATO: Used by the U.S. military, Chinese military and others
  • Romeo - Military abbreviation for EST
  • R - short form of 'Romeo'
IANA/Olson: Reflects EST time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
  • 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
Time zones with the GMT -5 offset:
  • 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