CDT to GMT to Sydney to Dublin to Berlin Time Converter

Updating current time…
CDT
Central Daylight Time
UTC−5
12am
3am
6am
9am
12pm
3pm
6pm
9pm
GMT
Greenwich Mean Time
UTC+0
12am
3am
6am
9am
12pm
3pm
6pm
9pm
The United Kingdom is on summer time: BST (UTC+1) until Sun, Oct 25.

Iceland and Ghana stay on GMT (UTC+0).

Iceland, Ghana · GMT all year (UTC+0)United Kingdom · BST (UTC+1)
Sydney
AustraliaAEDT
UTC+11
12am
3am
6am
9am
12pm
3pm
6pm
9pm
Dublin
IrelandIST
UTC+1
12am
3am
6am
9am
12pm
3pm
6pm
9pm
Dublin's clocks go back 1 hour on Sun, Oct 25 · IST → GMT
Berlin
GermanyCEST
UTC+2
12am
3am
6am
9am
12pm
3pm
6pm
9pm
Berlin's clocks go back 1 hour on Sun, Oct 25 · CEST → CET

Quick answers

Selected conversion

7:00 am07:00 CDT (UTC-5), Oct 13, 2026 = 12:00 pm12:00 GMT (UTC+0), Oct 13, 2026 = 11:00 pm23:00 AEDT (UTC+11), Oct 13, 2026 = 1:00 pm13:00 IST (UTC+1), Oct 13, 2026 = 2:00 pm14:00 CEST (UTC+2), Oct 13, 2026

CDT is 5 hours behind GMT. CDT is 16 hours behind Sydney. CDT is 6 hours behind Dublin. CDT is 7 hours behind Berlin.

How the time difference changes

CDT to GMT

For most of the year, CDT is 5 hours behind GMT. From Nov 1, 2026 to Mar 14, 2027, CST is 6 hours behind GMT.

For most of the year, working hours of 9:00 am to 5:00 pm in CDT correspond to 2:00 pm to 10:00 pm in GMT. At other times of the year, working hours of 9:00 am to 5:00 pm in CST correspond to 3:00 pm to 11:00 pm in GMT.For most of the year, working hours of 09:00 to 17:00 in CDT correspond to 14:00 to 22:00 in GMT. At other times of the year, working hours of 09:00 to 17:00 in CST correspond to 15:00 to 23:00 in GMT.

CDT to Sydney

Depending on seasonal clock changes, CDT is 15 hours behind Sydney, CDT is 16 hours behind Sydney, or CST is 17 hours behind Sydney.

Depending on seasonal clock changes, working hours of 9:00 am to 5:00 pm in CDT correspond to 12:00 am (next day) to 8:00 am (next day) in Sydney, working hours of 9:00 am to 5:00 pm in CDT correspond to 1:00 am (next day) to 9:00 am (next day) in Sydney, or working hours of 9:00 am to 5:00 pm in CST correspond to 2:00 am (next day) to 10:00 am (next day) in Sydney.Depending on seasonal clock changes, working hours of 09:00 to 17:00 in CDT correspond to 00:00 (next day) to 08:00 (next day) in Sydney, working hours of 09:00 to 17:00 in CDT correspond to 01:00 (next day) to 09:00 (next day) in Sydney, or working hours of 09:00 to 17:00 in CST correspond to 02:00 (next day) to 10:00 (next day) in Sydney.

CDT to Dublin

For most of the year, CDT is 6 hours behind Dublin. From Oct 25 to Nov 1, 2026, and from Mar 14 to Mar 28, 2027, CDT is 5 hours behind Dublin. From Nov 1, 2026 to Mar 14, 2027, CST is 6 hours behind Dublin.

For most of the year, working hours of 9:00 am to 5:00 pm in CDT correspond to 3:00 pm to 11:00 pm in Dublin. At other times of the year, working hours of 9:00 am to 5:00 pm in CST correspond to 3:00 pm to 11:00 pm in Dublin or working hours of 9:00 am to 5:00 pm in CDT correspond to 2:00 pm to 10:00 pm in Dublin.For most of the year, working hours of 09:00 to 17:00 in CDT correspond to 15:00 to 23:00 in Dublin. At other times of the year, working hours of 09:00 to 17:00 in CST correspond to 15:00 to 23:00 in Dublin or working hours of 09:00 to 17:00 in CDT correspond to 14:00 to 22:00 in Dublin.

CDT to Berlin

For most of the year, CDT is 7 hours behind Berlin. From Oct 25 to Nov 1, 2026, and from Mar 14 to Mar 28, 2027, CDT is 6 hours behind Berlin. From Nov 1, 2026 to Mar 14, 2027, CST is 7 hours behind Berlin.

For most of the year, working hours of 9:00 am to 5:00 pm in CDT correspond to 4:00 pm to 12:00 am (next day) in Berlin. At other times of the year, working hours of 9:00 am to 5:00 pm in CST correspond to 4:00 pm to 12:00 am (next day) in Berlin or working hours of 9:00 am to 5:00 pm in CDT correspond to 3:00 pm to 11:00 pm in Berlin.For most of the year, working hours of 09:00 to 17:00 in CDT correspond to 16:00 to 00:00 (next day) in Berlin. At other times of the year, working hours of 09:00 to 17:00 in CST correspond to 16:00 to 00:00 (next day) in Berlin or working hours of 09:00 to 17:00 in CDT correspond to 15:00 to 23:00 in Berlin.

Compare CDT time with GMT, Sydney, Dublin, and Berlin time, including current local time, UTC offsets, time difference, daylight saving changes, working hours, and shareable meeting times.

Time Difference

Central Daylight Time is 5 hours behind Greenwich Mean Time. Central Daylight Time is 16 hours behind AEDT (Australian Eastern Daylight Time). Central Daylight Time is 6 hours behind IST (Irish Standard Time). Central Daylight Time is 7 hours behind CEST (Central European Summer Time).
7:00 am07:00 in CDT is 12:00 pm12:00 in GMT and is 11:00 pm23:00 in Sydney, Australia and is 1:00 pm13:00 in Dublin, Ireland and is 2:00 pm14:00 in Berlin, Germany

CDT to GMT call time
Best time for a conference call or a meeting is between 9am-12pm09:00-12:00 in CDT which corresponds to 2pm-5pm14:00-17:00 in GMT
CDT to Sydney call time
Best time for a conference call or a meeting is between 4:30pm-5:30pm16:30-17:30 in CDT which corresponds to 8:30am-9:30am08:30-09:30 in Sydney (next day). Their 9am–5pm09:00–17:00 working hours do not overlap; this is a suggested compromise.
CDT to Dublin call time
Best time for a conference call or a meeting is between 9am-11am09:00-11:00 in CDT which corresponds to 3pm-5pm15:00-17:00 in Dublin
CDT to Berlin call time
Best time for a conference call or a meeting is between 9am-10am09:00-10:00 in CDT which corresponds to 4pm-5pm16:00-17:00 in Berlin

7:00 am07:00 Central Daylight Time (CDT). Offset UTC -5:00 hours
12:00 pm12:00 Greenwich Mean Time (GMT). Offset UTC 0:00 hours
11:00 pm23:00 AEDT (Australian Eastern Daylight Time) (Sydney, Australia). Offset UTC +11:00 hours
1:00 pm13:00 IST (Irish Standard Time) (Dublin, Ireland). Offset UTC +1:00 hour
2:00 pm14:00 CEST (Central European Summer Time) (Berlin, Germany). Offset UTC +2:00 hours

7:00 am07:00 CDT / 12:00 pm12:00 GMT / 11:00 pm23:00 Sydney, Australia / 1:00 pm13:00 Dublin, Ireland / 2:00 pm14:00 Berlin, Germany

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
CDTGMTSydney, AustraliaDublin, IrelandBerlin, Germany
5:00am4:00pm6:00am7:00am
6:00am5:00pm7:00am8:00am
7:00am6:00pm8:00am9:00am
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10:00am9:00pm11:00am12:00pm
11:00am10:00pm12:00pm1:00pm
12:00pm11:00pm1:00pm2:00pm
1:00pm12:00am next day2:00pm3:00pm
2:00pm1:00am next day3:00pm4:00pm
3:00pm2:00am next day4:00pm5:00pm
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13:0000:00 next day14:0015:00
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17:0004:00 next day18:0019:00
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22:0009:00 next day23:0000:00 next day
23:0010:00 next day00:00 next day01:00 next day
00:00 next day11:00 next day01:00 next day02:00 next day
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02:00 next day13:00 next day03:00 next day04:00 next day
03:00 next day14:00 next day04:00 next day05:00 next day
04:00 next day15:00 next day05:00 next day06:00 next day

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 all shaded areas are on CDT.

Open the world time zone map© OpenStreetMap

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).

123456789101112Start: Central Daylight Time (CDT) 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.

123456789101112End: Central Daylight Time (CDT) 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 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

Greenwich Mean Time

Offset: GMT is the same as Greenwich Mean Time (GMT).

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 the United Kingdom, with about 8.962 million people. Other major cities in this time zone include Abidjan, Bamako, Dakar, Kumasi.

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 the lighter areas are on UTC+1 (British Summer Time, Irish Standard Time).

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

Sydney Time Zone and Facts

Time Zone

Abbreviation / Offset
AEDT – Australian Eastern Daylight Time, UTC+11 (now, daylight saving time)
AEST – Australian Eastern Standard Time, UTC+10 (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 (AEST). 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 (AEDT). 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

Sydney Facts

Country
Australia
Alternative Names
SYD, Sanctus Dionysius, Sedniejos, Sek-na, Sidnef, Sidnei, Sidnej, Sidneja, Sidnejo, Sidnejus, Sidney, Sidneý, Sidni, Sidnéy, Sidnėjus, Sit-ni, Sit-nì, Syd, Sydneium, Sydney, Sydney City, Sék-nà̤, Sídney, Sîdney, Sėdniejos, citni, shidoni, sidani, sideuni, sidnei, sidni, sidniy, sydny, xi ni, xue li, Σίδνεϋ, Сиднеи, Сидней, Сиднеј, Сидни, Сідней, Сідні, Սիդնեյ, סידני, سيدنى, سيدني, سڈنی, سیدنی, ܣܝܕܢܝ, सिडनी, सिड्नी, सिद्नी, সিডনি, ਸਿਡਨੀ, સીડની, சிட்னி, సిడ్నీ, ಸಿಡ್ನಿ, സിഡ്നി, සිඩ්නි, ซิดนีย์, སིད་ནེ།, ဆစ်ဒနီမြို့, სიდნეი, ሲድኒ, ស៊ីដនីយ៏, シドニー, 悉尼, 雪梨, 시드니
Population
5,638,830
Currency
Dollar (AUD)
Geographic Coordinates
33° 52' S Latitude / 151° 12' E Longitude
International Dialing Code
+61
More About Sydney
Sydney local time and city facts

Dublin Time Zone and Facts

Time Zone

Abbreviation / Offset
IST – Irish Standard Time, UTC+1 (now, daylight saving time)
GMT – Greenwich Mean Time, UTC+0 (standard time)
Daylight Saving Time Ends
123456789101112Sunday, October 25, 2026 at 2:00 amSunday, October 25, 2026 at 02:00: clocks go back 1 hour to 1:00 am01:00 (GMT). DST ends on the last Sunday of October each year. Also called Fall Back or Winter Time.
Daylight Saving Time Starts
123456789101112Sunday, March 28, 2027 at 1:00 amSunday, March 28, 2027 at 01:00: clocks go forward 1 hour to 2:00 am02:00 (IST). DST starts on the last Sunday of March each year. Also called Spring Forward or Summer Time.
Clock Changes
Ireland daylight saving time · Clock changes worldwide

Dublin Facts

Country
Ireland
Alternative Names
Baile Atha Cliath, Baile Átha Cliath, Ciuda de Dublin, Ciudá de Dublín, DUB, Dablin, Diblin, Difelin, Divlyn, Doublino, Dublin, Dublin city, Dublina, Dublinas, Dublini, Dublino, Dublinu, Dublín, Dublîn, Dueblin, Dulenn, Dulyn, Dyflinn, Düblin, Eblana, dabalina, dablin, dablina, daburin, dbln, dblyn, deobeullin, dou bai lin, dublini, dwblyn, taplin, Δουβλίνο, Даблин, Дублин, Дублін, Дъблин, Դուբլին, דבלין, דובלין, دبلن, دوبلين, دوبلین, دۇبلىن, ڈبلن, ډبلن, ܕܒܠܢ, डब्लिन, दब्लिन, ডাবলিন, ਡਬਲਿਨ, டப்லின், ಡಬ್ಲಿನ್, ഡബ്ലിൻ, ดับลิน, དུབ་ལིན།, ဒပ်ဗလင်မြို့, დუბლინი, ደብሊን, ダブリン, 都柏林, 더블린
Population
1,024,027
Currency
Euro (EUR)
Geographic Coordinates
53° 19' N Latitude / 6° 14' W Longitude
International Dialing Code
+353
More About Dublin
Dublin local time and city facts

Berlin Time Zone and Facts

Time Zone

Abbreviation / Offset
CEST – Central European Summer Time, UTC+2 (now, daylight saving time)
CET – Central European Time, UTC+1 (standard time)
Daylight Saving Time Ends
123456789101112Sunday, October 25, 2026 at 3:00 amSunday, October 25, 2026 at 03:00: clocks go back 1 hour to 2:00 am02:00 (CET). DST ends on the last Sunday of October each year. Also called Fall Back or Winter Time.
Daylight Saving Time Starts
123456789101112Sunday, March 28, 2027 at 2:00 amSunday, March 28, 2027 at 02:00: clocks go forward 1 hour to 3:00 am03:00 (CEST). DST starts on the last Sunday of March each year. Also called Spring Forward or Summer Time.
Clock Changes
Germany daylight saving time · Clock changes worldwide

Berlin Facts

Country
Germany
Alternative Names
BER, Beirlin, Beirlín, Berleno, Berlien, Berliin, Berliini, Berlijn, Berlim, Berlin, Berline, Berlini, Berlino, Berlyn, Berlynas, Berlëno, Berlín, Berlîn, Berlīne, Berolino, Berolinum, Birlinu, Bèrlîn, Estat de Berlin, Estat de Berlín, bai lin, barlina, beleullin, berlini, berurin, bexrlin, brlyn, perlin, Βερολίνο, Берлин, Берлін, Бэрлін, Բերլին, בערלין, ברלין, برلين, برلین, بېرلىن, ܒܪܠܝܢ, बर्लिन, বার্লিন, பெர்லின், เบอร์ลิน, ბერლინი, ベルリン, 柏林, 베를린
Population
3,426,354
Currency
Euro (EUR)
Geographic Coordinates
52° 31' N Latitude / 13° 24' E Longitude
International Dialing Code
+49
More About Berlin
Berlin local time and city facts
EST to ISTGMT to ESTPST to ESTEST to GMTPST to GMT