PHT to Sydney to PST to CET to EDT to GMT to CDT Time Converter

Updating current time…
PHT
Philippine Time
UTC+8
12am
3am
6am
9am
12pm
3pm
6pm
9pm
Sydney
AustraliaAEDT
UTC+11
3h ahead
12am
3am
6am
9am
12pm
3pm
6pm
9pm
PST
Pacific Standard Time
UTC−8
16h behind
12am
3am
6am
9am
12pm
3pm
6pm
9pm
CET
Central European Time
UTC+1
7h behind
12am
3am
6am
9am
12pm
3pm
6pm
9pm
EST/EDT
Eastern Standard Time
UTC−5
13h behind
12am
3am
6am
9am
12pm
3pm
6pm
9pm
Eastern Time is on standard time: EST (UTC−5) until Sun, Mar 14, 2027.
Keep EDT (UTC−4)
GMT
Greenwich Mean Time
UTC+0
8h behind
12am
3am
6am
9am
12pm
3pm
6pm
9pm
CST/CDT
Central Standard Time
UTC−6
14h 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)

Quick answers

Selected conversion

8:00 pm20:00 PHT (UTC+8), Nov 5, 2026 = 11:00 pm23:00 AEDT (UTC+11), Nov 5, 2026 = 4:00 am04:00 PST (UTC-8), Nov 5, 2026 = 1:00 pm13:00 CET (UTC+1), Nov 5, 2026 = 7:00 am07:00 EST (UTC-5), Nov 5, 2026 = 12:00 pm12:00 GMT (UTC+0), Nov 5, 2026 = 6:00 am06:00 CST (UTC-6), Nov 5, 2026

PHT is 3 hours behind Sydney. PHT is 16 hours ahead of PST. PHT is 7 hours ahead of CET. PHT is 13 hours ahead of EST. PHT is 8 hours ahead of GMT. PHT is 14 hours ahead of CST.

How the time difference changes

PHT to Sydney

Depending on seasonal clock changes, PHT is 2 hours behind Sydney or PHT is 3 hours behind Sydney.

Depending on seasonal clock changes, working hours of 9:00 am to 6:00 pm in PHT correspond to 11:00 am to 8:00 pm in Sydney or working hours of 9:00 am to 6:00 pm in PHT correspond to 12:00 pm to 9:00 pm in Sydney.Depending on seasonal clock changes, working hours of 09:00 to 18:00 in PHT correspond to 11:00 to 20:00 in Sydney or working hours of 09:00 to 18:00 in PHT correspond to 12:00 to 21:00 in Sydney.

PHT to PST

For most of the year, PHT is 15 hours ahead of PDT. From Nov 1, 2026 to Mar 14, 2027, PHT is 16 hours ahead of PST.

For most of the year, working hours of 9:00 am to 6:00 pm in PHT correspond to 6:00 pm (previous day) to 3:00 am in PDT. At other times of the year, working hours of 9:00 am to 6:00 pm in PHT correspond to 5:00 pm (previous day) to 2:00 am in PST.For most of the year, working hours of 09:00 to 18:00 in PHT correspond to 18:00 (previous day) to 03:00 in PDT. At other times of the year, working hours of 09:00 to 18:00 in PHT correspond to 17:00 (previous day) to 02:00 in PST.

PHT to CET

For most of the year, PHT is 6 hours ahead of CEST. From Oct 25, 2026 to Mar 28, 2027, and from Oct 31, 2027 to Mar 26, 2028, PHT is 7 hours ahead of CET.

For most of the year, working hours of 9:00 am to 6:00 pm in PHT correspond to 3:00 am to 12:00 pm in CEST. At other times of the year, working hours of 9:00 am to 6:00 pm in PHT correspond to 2:00 am to 11:00 am in CET.For most of the year, working hours of 09:00 to 18:00 in PHT correspond to 03:00 to 12:00 in CEST. At other times of the year, working hours of 09:00 to 18:00 in PHT correspond to 02:00 to 11:00 in CET.

PHT to EDT

For most of the year, PHT is 12 hours ahead of EDT. From Nov 1, 2026 to Mar 14, 2027, PHT is 13 hours ahead of EST.

For most of the year, working hours of 9:00 am to 6:00 pm in PHT correspond to 9:00 pm (previous day) to 6:00 am in EDT. At other times of the year, working hours of 9:00 am to 6:00 pm in PHT correspond to 8:00 pm (previous day) to 5:00 am in EST.For most of the year, working hours of 09:00 to 18:00 in PHT correspond to 21:00 (previous day) to 06:00 in EDT. At other times of the year, working hours of 09:00 to 18:00 in PHT correspond to 20:00 (previous day) to 05:00 in EST.

PHT to GMT

PHT is 8 hours ahead of GMT year-round.

Working hours of 9:00 am to 6:00 pm in PHT correspond to 1:00 am to 10:00 am in GMT.Working hours of 09:00 to 18:00 in PHT correspond to 01:00 to 10:00 in GMT.

PHT to CDT

For most of the year, PHT is 13 hours ahead of CDT. From Nov 1, 2026 to Mar 14, 2027, PHT is 14 hours ahead of CST.

For most of the year, working hours of 9:00 am to 6:00 pm in PHT correspond to 8:00 pm (previous day) to 5:00 am in CDT. At other times of the year, working hours of 9:00 am to 6:00 pm in PHT correspond to 7:00 pm (previous day) to 4:00 am in CST.For most of the year, working hours of 09:00 to 18:00 in PHT correspond to 20:00 (previous day) to 05:00 in CDT. At other times of the year, working hours of 09:00 to 18:00 in PHT correspond to 19:00 (previous day) to 04:00 in CST.

Compare PHT time with Sydney, PST, CET, EDT, GMT, and CDT time, including current local time, UTC offsets, time difference, daylight saving changes, working hours, and shareable meeting times.

Time Difference

Philippine Time is 3 hours behind AEDT (Australian Eastern Daylight Time). Philippine Time is 16 hours ahead of Pacific Standard Time. Philippine Time is 7 hours ahead of Central European Time. Philippine Time is 13 hours ahead of Eastern Standard Time. Philippine Time is 8 hours ahead of Greenwich Mean Time. Philippine Time is 14 hours ahead of Central Standard Time.
8:00 pm20:00 in PHT is 11:00 pm23:00 in Sydney, Australia and is 4:00 am04:00 in PST and is 1:00 pm13:00 in CET and is 7:00 am07:00 in EST and is 12:00 pm12:00 in GMT and is 6:00 am06:00 in CST

PHT to Sydney call time
Best time for a conference call or a meeting is between 9am-3pm09:00-15:00 in PHT which corresponds to 12pm-6pm12:00-18:00 in Sydney
PHT to PST call time
Best time for a conference call or a meeting is between 9am-10am09:00-10:00 in PHT which corresponds to 5pm-6pm17:00-18:00 in PST (previous day)
PHT to CET call time
Best time for a conference call or a meeting is between 4pm-6pm16:00-18:00 in PHT which corresponds to 9am-11am09:00-11:00 in CET
PHT to EST call time
Best time for a conference call or a meeting is between 7:30am-8:30am07:30-08:30 in PHT which corresponds to 6:30pm-7:30pm18:30-19:30 in EST (previous day). Their 9am–6pm09:00–18:00 working hours do not overlap; this is a suggested compromise.
PHT to GMT call time
Best time for a conference call or a meeting is between 5pm-6pm17:00-18:00 in PHT which corresponds to 9am-10am09:00-10:00 in GMT
PHT to CST call time
Best time for a conference call or a meeting is between 8am-9am08:00-09:00 in PHT which corresponds to 6pm-7pm18:00-19:00 in CST (previous day). Their 9am–6pm09:00–18:00 working hours do not overlap; this is a suggested compromise.

8:00 pm20:00 Philippine Time (PHT). Offset UTC +8:00 hours
11:00 pm23:00 AEDT (Australian Eastern Daylight Time) (Sydney, Australia). Offset UTC +11:00 hours
4:00 am04:00 Pacific Standard Time (PST). Offset UTC -8:00 hours
1:00 pm13:00 Central European Time (CET). Offset UTC +1:00 hour
7:00 am07:00 Eastern Standard Time (EST). Offset UTC -5:00 hours
12:00 pm12:00 Greenwich Mean Time (GMT). Offset UTC 0:00 hours
6:00 am06:00 Central Standard Time (CST). Offset UTC -6:00 hours

8:00 pm20:00 PHT / 11:00 pm23:00 Sydney, Australia / 4:00 am04:00 PST / 1:00 pm13:00 CET / 7:00 am07:00 EST / 12:00 pm12:00 GMT / 6:00 am06:00 CST

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
PHTSydney, AustraliaPSTCETESTGMTCST
3:00am8:00am previous day5:00pm previous day11:00am previous day4:00pm previous day10:00am previous day
4:00am9:00am previous day6:00pm previous day12:00pm previous day5:00pm previous day11:00am previous day
5:00am10:00am previous day7:00pm previous day1:00pm previous day6:00pm previous day12:00pm previous day
6:00am11:00am previous day8:00pm previous day2:00pm previous day7:00pm previous day1:00pm previous day
7:00am12:00pm previous day9:00pm previous day3:00pm previous day8:00pm previous day2:00pm previous day
8:00am1:00pm previous day10:00pm previous day4:00pm previous day9:00pm previous day3:00pm previous day
9:00am2:00pm previous day11:00pm previous day5:00pm previous day10:00pm previous day4:00pm previous day
10:00am3:00pm previous day12:00am6:00pm previous day11:00pm previous day5:00pm previous day
11:00am4:00pm previous day1:00am7:00pm previous day12:00am6:00pm previous day
12:00pm5:00pm previous day2:00am8:00pm previous day1:00am7:00pm previous day
1:00pm6:00pm previous day3:00am9:00pm previous day2:00am8:00pm previous day
2:00pm7:00pm previous day4:00am10:00pm previous day3:00am9:00pm previous day
3:00pm8:00pm previous day5:00am11:00pm previous day4:00am10:00pm previous day
4:00pm9:00pm previous day6:00am12:00am5:00am11:00pm previous day
5:00pm10:00pm previous day7:00am1:00am6:00am12:00am
6:00pm11:00pm previous day8:00am2:00am7:00am1:00am
7:00pm12:00am9:00am3:00am8:00am2:00am
8:00pm1:00am10:00am4:00am9:00am3:00am
9:00pm2:00am11:00am5:00am10:00am4:00am
10:00pm3:00am12:00pm6:00am11:00am5:00am
11:00pm4:00am1:00pm7:00am12:00pm6:00am
12:00am next day5:00am2:00pm8:00am1:00pm7:00am
1:00am next day6:00am3:00pm9:00am2:00pm8:00am
2:00am next day7:00am4:00pm10:00am3:00pm9:00am
03:0008:00 previous day17:00 previous day11:00 previous day16:00 previous day10:00 previous day
04:0009:00 previous day18:00 previous day12:00 previous day17:00 previous day11:00 previous day
05:0010:00 previous day19:00 previous day13:00 previous day18:00 previous day12:00 previous day
06:0011:00 previous day20:00 previous day14:00 previous day19:00 previous day13:00 previous day
07:0012:00 previous day21:00 previous day15:00 previous day20:00 previous day14:00 previous day
08:0013:00 previous day22:00 previous day16:00 previous day21:00 previous day15:00 previous day
09:0014:00 previous day23:00 previous day17:00 previous day22:00 previous day16:00 previous day
10:0015:00 previous day00:0018:00 previous day23:00 previous day17:00 previous day
11:0016:00 previous day01:0019:00 previous day00:0018:00 previous day
12:0017:00 previous day02:0020:00 previous day01:0019:00 previous day
13:0018:00 previous day03:0021:00 previous day02:0020:00 previous day
14:0019:00 previous day04:0022:00 previous day03:0021:00 previous day
15:0020:00 previous day05:0023:00 previous day04:0022:00 previous day
16:0021:00 previous day06:0000:0005:0023:00 previous day
17:0022:00 previous day07:0001:0006:0000:00
18:0023:00 previous day08:0002:0007:0001:00
19:0000:0009:0003:0008:0002:00
20:0001:0010:0004:0009:0003:00
21:0002:0011:0005:0010:0004:00
22:0003:0012:0006:0011:0005:00
23:0004:0013:0007:0012:0006:00
00:00 next day05:0014:0008:0013:0007:00
01:00 next day06:0015:0009:0014:0008:00
02:00 next day07:0016:0010:0015:0009:00

Philippine Time

Offset: PHT is 8 hours ahead of Greenwich Mean Time (GMT).

Countries using this time zone: Philippines

Principal Cities: The largest city in the PHT time zone is Quezon City in the Philippines, with about 3.084 million people. Other major cities in this time zone include Davao, Caloocan, Manila, Taguig.

Daylight Saving: Clocks in Philippine Time (PHT) do not change for daylight saving time, so PHT stays the same throughout the year. Other time zones may set clocks forward in summer and back in winter; see upcoming clock changes worldwide.

Map of the areas on Philippine Time (PHT)
PHT all year

Open the world time zone map© OpenStreetMap

PHT representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • +08 - basic short
  • +0800 - basic
  • +08:00 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • +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 east of the zero meridian.
Military/NATO: Used by the U.S. military, Chinese military and others
  • Hotel - Military abbreviation for PHT
  • H - short form of 'Hotel'
Time zones with the GMT +8 offset:
  • ACT - ASEAN Common Time
  • AWST - Australian Western Standard Time
  • BNT - Brunei Darussalam Time
  • CAST - Casey Time
  • CHOT - Choibalsan Time
  • CST - China Standard Time
  • H - Hotel Time Zone
  • HKT - Hong Kong Time
  • HOVST - Hovd Summer Time
  • IRKT - Irkutsk Time
  • KRAST - Krasnoyarsk Summer Time
  • MYT - Malaysia Time
  • PHT - Philippine Time
  • SGT - Singapore Time
  • ULAT - Ulaanbaatar Time
  • WITA - Central Indonesian Time

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 time now

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

Map of the areas on Pacific Standard Time (PST)
PST part of the year

Today all shaded areas are on PST.

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 Pacific Daylight Time (PDT).

123456789101112Start: Pacific Standard Time (PST) 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: Pacific Standard Time (PST) 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.

PST representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • -08 - basic short
  • -0800 - basic
  • -08:00 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • -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.
Military/NATO: Used by the U.S. military, Chinese military and others
  • Uniform - Military abbreviation for PST
  • U - short form of 'Uniform'
IANA/Olson: Reflects PST time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
  • America/Ensenada
  • America/Los_Angeles
  • America/Santa_Isabel
  • America/Tijuana
  • America/Vancouver
  • Canada/Pacific
  • Mexico/BajaNorte
  • PST8PDT
  • US/Pacific
PST Abbreviation: Several time zones share PST abbreviation and it could refer to these time zones
  • Pacific Standard Time - UTC -8
  • Pitcairn Standard Time - UTC -8
Time zones with the GMT -8 offset:
  • AKDT - Alaska Daylight Time
  • PST - Pacific Standard Time
  • PT - Pacific Time
  • PST - Pitcairn Standard Time
  • U - Uniform Time Zone

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

Eastern Daylight Time

Offset: EDT is 4 hours behind Greenwich Mean Time (GMT).

Countries using this time zone: Bahamas, Canada, Haiti, Turks and Caicos Islands, United States

Principal Cities: The largest city in the EDT 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: HAE - Heure Avancée de l'Est

Spanish: EDT - Tiempo de verano del Este, ET - Zona Sureste

Map of the areas on Eastern Daylight Time (EDT)
EDT part of the year

Today the shaded areas are on UTC−5 (EST).

Open the world time zone map© OpenStreetMap

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

123456789101112End: Eastern Daylight Time (EDT) 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: Eastern Daylight Time (EDT) 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.

EDT representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • -04 - basic short
  • -0400 - basic
  • -04:00 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • -0400 - sign character (-) followed by a four digit time providing hours (04) and minutes (00) of the offset. Indicates an offset of four hours to the west of the zero meridian.
Military/NATO: Used by the U.S. military, Chinese military and others
  • Quebec - Military abbreviation for EDT
  • Q - short form of 'Quebec'
IANA/Olson: Reflects EDT time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
  • 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/Kentucky/Louisville
  • America/Kentucky/Monticello
  • America/Louisville
  • America/Montreal
  • America/Nassau
  • America/New_York
  • America/Nipigon
  • America/Pangnirtung
  • America/Port-au-Prince
  • America/Thunder_Bay
  • America/Toronto
  • Canada/Eastern
  • EST5EDT
  • US/East-Indiana
  • US/Eastern
  • US/Michigan
Time zones with the GMT -4 offset:
  • AST - Atlantic Standard Time
  • EDT - Eastern Daylight Time
  • AMT - Amazon Time
  • BOT - Bolivia Time
  • CDT - Cuba Daylight Time
  • CLT - Chile Standard Time
  • GYT - Guyana Time
  • HLV - Hora Legal de Venezuela
  • Q - Quebec Time Zone
  • VET - Venezuelan 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.

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

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