Updating current time…
United KingdomGMT
UTC+0
12am
3am
6am
9am
12pm
3pm
6pm
9pm
CanadaEST
UTC−5
5h behind
12am
3am
6am
9am
12pm
3pm
6pm
9pm
PST
UTC−8
8h behind
12am
3am
6am
9am
12pm
3pm
6pm
9pm
AustraliaAEDT
UTC+11
tomorrow (next day)
11h ahead
12am
3am
6am
9am
12pm
3pm
6pm
9pm
AustraliaAEST
UTC+10
tomorrow (next day)
10h ahead
12am
3am
6am
9am
12pm
3pm
6pm
9pm
GMT
UTC+0
same time
12am
3am
6am
9am
12pm
3pm
6pm
9pm
AEST
UTC+10
tomorrow (next day)
10h ahead
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).

Quick answers

Selected conversion

4:30 pm16:30 GMT (UTC+0), Nov 1, 2026 = 11:30 am11:30 EST (UTC-5), Nov 1, 2026 = 8:30 am08:30 PST (UTC-8), Nov 1, 2026 = 3:30 am03:30 AEDT (UTC+11), Nov 2, 2026 = 2:30 am02:30 AEST (UTC+10), Nov 2, 2026 = 4:30 pm16:30 GMT (UTC+0), Nov 1, 2026 = 2:30 am02:30 AEST (UTC+10), Nov 2, 2026

London is 5 hours ahead of Toronto. London is 8 hours ahead of PST. London is 11 hours behind Sydney. London is 10 hours behind Brisbane. London and GMT have the same local time. London is 10 hours behind AEST.

How the time difference changes

London to Toronto

For most of the year, London is 5 hours ahead of Toronto. From Mar 14 to Mar 28, 2027, and from Oct 31 to Nov 7, 2027, London is 4 hours ahead of Toronto.

For most of the year, working hours of 9:00 am to 6:00 pm in London correspond to 4:00 am to 1:00 pm in Toronto. At other times of the year, working hours of 9:00 am to 6:00 pm in London correspond to 5:00 am to 2:00 pm in Toronto.For most of the year, working hours of 09:00 to 18:00 in London correspond to 04:00 to 13:00 in Toronto. At other times of the year, working hours of 09:00 to 18:00 in London correspond to 05:00 to 14:00 in Toronto.

London to PST

For most of the year, London is 8 hours ahead of PDT. From Nov 1, 2026 to Mar 14, 2027, London is 8 hours ahead of PST. From Mar 14 to Mar 28, 2027, and from Oct 31 to Nov 7, 2027, London is 7 hours ahead of PDT.

For most of the year, working hours of 9:00 am to 6:00 pm in London correspond to 1:00 am to 10:00 am in PDT. At other times of the year, working hours of 9:00 am to 6:00 pm in London correspond to 1:00 am to 10:00 am in PST or working hours of 9:00 am to 6:00 pm in London correspond to 2:00 am to 11:00 am in PDT.For most of the year, working hours of 09:00 to 18:00 in London correspond to 01:00 to 10:00 in PDT. At other times of the year, working hours of 09:00 to 18:00 in London correspond to 01:00 to 10:00 in PST or working hours of 09:00 to 18:00 in London correspond to 02:00 to 11:00 in PDT.

London to Sydney

Depending on seasonal clock changes, London is 9 hours behind Sydney, London is 10 hours behind Sydney, or London is 11 hours behind Sydney.

Depending on seasonal clock changes, working hours of 9:00 am to 6:00 pm in London correspond to 6:00 pm to 3:00 am (next day) in Sydney, working hours of 9:00 am to 6:00 pm in London correspond to 7:00 pm to 4:00 am (next day) in Sydney, or working hours of 9:00 am to 6:00 pm in London correspond to 8:00 pm to 5:00 am (next day) in Sydney.Depending on seasonal clock changes, working hours of 09:00 to 18:00 in London correspond to 18:00 to 03:00 (next day) in Sydney, working hours of 09:00 to 18:00 in London correspond to 19:00 to 04:00 (next day) in Sydney, or working hours of 09:00 to 18:00 in London correspond to 20:00 to 05:00 (next day) in Sydney.

London to Brisbane

For most of the year, London is 9 hours behind Brisbane. From Oct 25, 2026 to Mar 28, 2027, and from Oct 31, 2027 to Mar 26, 2028, London is 10 hours behind Brisbane.

For most of the year, working hours of 9:00 am to 6:00 pm in London correspond to 6:00 pm to 3:00 am (next day) in Brisbane. At other times of the year, working hours of 9:00 am to 6:00 pm in London correspond to 7:00 pm to 4:00 am (next day) in Brisbane.For most of the year, working hours of 09:00 to 18:00 in London correspond to 18:00 to 03:00 (next day) in Brisbane. At other times of the year, working hours of 09:00 to 18:00 in London correspond to 19:00 to 04:00 (next day) in Brisbane.

London to GMT

For most of the year, London is 1 hour ahead of GMT. From Oct 25, 2026 to Mar 28, 2027, and from Oct 31, 2027 to Mar 26, 2028, London and GMT have the same time.

For most of the year, working hours of 9:00 am to 6:00 pm in London correspond to 8:00 am to 5:00 pm in GMT. At other times of the year, working hours of 9:00 am to 6:00 pm in London correspond to 9:00 am to 6:00 pm in GMT.For most of the year, working hours of 09:00 to 18:00 in London correspond to 08:00 to 17:00 in GMT. At other times of the year, working hours of 09:00 to 18:00 in London correspond to 09:00 to 18:00 in GMT.

London to AEST

For most of the year, London is 9 hours behind AEST. From Oct 25, 2026 to Mar 28, 2027, and from Oct 31, 2027 to Mar 26, 2028, London is 10 hours behind AEST.

For most of the year, working hours of 9:00 am to 6:00 pm in London correspond to 6:00 pm to 3:00 am (next day) in AEST. At other times of the year, working hours of 9:00 am to 6:00 pm in London correspond to 7:00 pm to 4:00 am (next day) in AEST.For most of the year, working hours of 09:00 to 18:00 in London correspond to 18:00 to 03:00 (next day) in AEST. At other times of the year, working hours of 09:00 to 18:00 in London correspond to 19:00 to 04:00 (next day) in AEST.

Compare London time with Toronto, PST, Sydney, Brisbane, GMT, and AEST time, including current local time, UTC offsets, time difference, daylight saving changes, working hours, and shareable meeting times.

Time Difference

GMT (Greenwich Mean Time) is 5 hours ahead of EST (Eastern Standard Time). GMT (Greenwich Mean Time) is 8 hours ahead of Pacific Standard Time. GMT (Greenwich Mean Time) is 11 hours behind AEDT (Australian Eastern Daylight Time). GMT (Greenwich Mean Time) is 10 hours behind AEST (Australian Eastern Standard Time). GMT (Greenwich Mean Time) and Greenwich Mean Time have the same local time. GMT (Greenwich Mean Time) is 10 hours behind Australian Eastern Standard Time.
4:30 pm16:30 in London, United Kingdom is 11:30 am11:30 in Toronto, Canada and is 8:30 am08:30 in PST and is 3:30 am03:30 in Sydney, Australia and is 2:30 am02:30 in Brisbane, Australia and is 4:30 pm16:30 in GMT and is 2:30 am02:30 in AEST

London to Toronto call time
Best time for a conference call or a meeting is between 2pm-6pm14:00-18:00 in London which corresponds to 9am-1pm09:00-13:00 in Toronto
London to PST call time
Best time for a conference call or a meeting is between 5pm-6pm17:00-18:00 in London which corresponds to 9am-10am09:00-10:00 in PST
London to Sydney call time
Best time for a conference call or a meeting is between 7:30am-8:30am07:30-08:30 in London which corresponds to 6:30pm-7:30pm18:30-19:30 in Sydney. Their 9am–6pm09:00–18:00 working hours do not overlap; this is a suggested compromise.
London to Brisbane call time
Best time for a conference call or a meeting is between 8am-9am08:00-09:00 in London which corresponds to 6pm-7pm18:00-19:00 in Brisbane. Their 9am–6pm09:00–18:00 working hours do not overlap; this is a suggested compromise.
London to GMT call time
Best time for a conference call or a meeting is between 9am-6pm09:00-18:00 in London which corresponds to 9am-6pm09:00-18:00 in GMT
London to AEST call time
Best time for a conference call or a meeting is between 8am-9am08:00-09:00 in London which corresponds to 6pm-7pm18:00-19:00 in AEST. Their 9am–6pm09:00–18:00 working hours do not overlap; this is a suggested compromise.

4:30 pm16:30 GMT (Greenwich Mean Time) (London, United Kingdom). Offset UTC 0:00 hours
11:30 am11:30 EST (Eastern Standard Time) (Toronto, Canada). Offset UTC -5:00 hours
8:30 am08:30 Pacific Standard Time (PST). Offset UTC -8:00 hours
3:30 am03:30 AEDT (Australian Eastern Daylight Time) (Sydney, Australia). Offset UTC +11:00 hours
2:30 am02:30 AEST (Australian Eastern Standard Time) (Brisbane, Australia). Offset UTC +10:00 hours
4:30 pm16:30 Greenwich Mean Time (GMT). Offset UTC 0:00 hours
2:30 am02:30 Australian Eastern Standard Time (AEST). Offset UTC +10:00 hours

4:30 pm16:30 London, United Kingdom / 11:30 am11:30 Toronto, Canada / 8:30 am08:30 PST / 3:30 am03:30 Sydney, Australia / 2:30 am02:30 Brisbane, Australia / 4:30 pm16:30 GMT / 2:30 am02:30 AEST

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
London, United KingdomToronto, CanadaPSTSydney, AustraliaBrisbane, AustraliaGMTAEST
8:00pm previous day EDT UTC-45:00pm previous day PDT UTC-711:00am10:00am12:00am10:00am
9:00pm previous day EDT UTC-46:00pm previous day PDT UTC-712:00pm11:00am1:00am11:00am
10:00pm previous day EDT UTC-47:00pm previous day PDT UTC-71:00pm12:00pm2:00am12:00pm
11:00pm previous day EDT UTC-48:00pm previous day PDT UTC-72:00pm1:00pm3:00am1:00pm
12:00am EDT UTC-49:00pm previous day PDT UTC-73:00pm2:00pm4:00am2:00pm
1:00am EDT UTC-410:00pm previous day PDT UTC-74:00pm3:00pm5:00am3:00pm
1:00am11:00pm previous day PDT UTC-75:00pm4:00pm6:00am4:00pm
2:00am12:00am PDT UTC-76:00pm5:00pm7:00am5:00pm
3:00am1:00am PDT UTC-77:00pm6:00pm8:00am6:00pm
4:00am1:00am8:00pm7:00pm9:00am7:00pm
5:00am2:00am9:00pm8:00pm10:00am8:00pm
6:00am3:00am10:00pm9:00pm11:00am9:00pm
7:00am4:00am11:00pm10:00pm12:00pm10:00pm
8:00am5:00am12:00am next day11:00pm1:00pm11:00pm
9:00am6:00am1:00am next day12:00am next day2:00pm12:00am next day
10:00am7:00am2:00am next day1:00am next day3:00pm1:00am next day
11:00am8:00am3:00am next day2:00am next day4:00pm2:00am next day
12:00pm9:00am4:00am next day3:00am next day5:00pm3:00am next day
1:00pm10:00am5:00am next day4:00am next day6:00pm4:00am next day
2:00pm11:00am6:00am next day5:00am next day7:00pm5:00am next day
3:00pm12:00pm7:00am next day6:00am next day8:00pm6:00am next day
4:00pm1:00pm8:00am next day7:00am next day9:00pm7:00am next day
5:00pm2:00pm9:00am next day8:00am next day10:00pm8:00am next day
6:00pm3:00pm10:00am next day9:00am next day11:00pm9:00am next day
20:00 previous day EDT UTC-417:00 previous day PDT UTC-711:0010:0000:0010:00
21:00 previous day EDT UTC-418:00 previous day PDT UTC-712:0011:0001:0011:00
22:00 previous day EDT UTC-419:00 previous day PDT UTC-713:0012:0002:0012:00
23:00 previous day EDT UTC-420:00 previous day PDT UTC-714:0013:0003:0013:00
00:00 EDT UTC-421:00 previous day PDT UTC-715:0014:0004:0014:00
01:00 EDT UTC-422:00 previous day PDT UTC-716:0015:0005:0015:00
01:0023:00 previous day PDT UTC-717:0016:0006:0016:00
02:0000:00 PDT UTC-718:0017:0007:0017:00
03:0001:00 PDT UTC-719:0018:0008:0018:00
04:0001:0020:0019:0009:0019:00
05:0002:0021:0020:0010:0020:00
06:0003:0022:0021:0011:0021:00
07:0004:0023:0022:0012:0022:00
08:0005:0000:00 next day23:0013:0023:00
09:0006:0001:00 next day00:00 next day14:0000:00 next day
10:0007:0002:00 next day01:00 next day15:0001:00 next day
11:0008:0003:00 next day02:00 next day16:0002:00 next day
12:0009:0004:00 next day03:00 next day17:0003:00 next day
13:0010:0005:00 next day04:00 next day18:0004:00 next day
14:0011:0006:00 next day05:00 next day19:0005:00 next day
15:0012:0007:00 next day06:00 next day20:0006:00 next day
16:0013:0008:00 next day07:00 next day21:0007:00 next day
17:0014:0009:00 next day08:00 next day22:0008:00 next day
18:0015:0010:00 next day09:00 next day23:0009:00 next day

London Time Zone and Facts

Time Zone

Abbreviation / Offset
GMT – Greenwich Mean Time, UTC+0 (now)
BST – British Summer Time, UTC+1 (daylight saving 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 (BST). DST starts on the last Sunday of March each year. Also called Spring Forward or Summer Time.
Daylight Saving Time Ends
123456789101112Sunday, October 31, 2027 at 2:00 amSunday, October 31, 2027 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.

London Facts

Country
United Kingdom
Alternative Names
ILondon, LON, Lakana, Landan, Landen, Ljondan, Llundain, Lodoni, Londain, Londan, Londar, Londe, Londen, Londin, Londinium, Londino, Londn, London, London osh, Londona, Londonas, Londoni, Londono, Londons, Londonu, Londra, Londres, Londrez, Londri, Londro, Londye, Londyn, Londýn, Lonn, Lontoo, Loundres, Luan GJon, Lun-tun, Lunden, Lundra, Lundun, Lundunir, Lundúnir, Lung-dung, Lunnainn, Lunnin, Lunnon, Luân Đôn, Lùn-tûn, Lùng-dŭng, Lûn-tun, Lākana, Lůndůn, Lọndọnu, Ranana, Rānana, ilantan, ladana, landan, landana, leondeon, lndn, london, londoni, lun dui, lun dun, lwndwn, lxndxn, rondon, Łondra, Λονδίνο, Лондан, Лондон, Лондон ош, Лондонъ, Лёндан, Լոնդոն, לאנדאן, לונדון, لأندأن, لندن, لوندون, لەندەن, ܠܘܢܕܘܢ, लंडन, लंदन, लण्डन, लन्डन्, लन्दन, লন্ডন, ਲੰਡਨ, લંડન, ଲଣ୍ଡନ, இலண்டன், లండన్, ಲಂಡನ್, ലണ്ടൻ, ලන්ඩන්, ลอนดอน, ລອນດອນ, ལོན་ཊོན།, လန်ဒန်မြို့, ლონდონი, ለንደን, ᎫᎴ ᏗᏍᎪᏂᎯᏱ, ロンドン, 伦敦, 倫敦, 런던
Population
8,961,989
Currency
Pound (GBP)
Geographic Coordinates
51° 30' N Latitude / 0° 07' W Longitude
International Dialing Code
+44
More About London
Current Time in the United Kingdom

Toronto Time Zone and Facts

Time Zone

Abbreviation / Offset
EST – Eastern Standard Time, UTC-5 (now)
EDT – Eastern Daylight Time, UTC-4 (daylight saving time)
Daylight Saving Time Starts
123456789101112Sunday, March 14, 2027 at 2:00 amSunday, March 14, 2027 at 02:00: clocks go forward 1 hour to 3:00 am03:00 (EDT). DST starts on the 2nd Sunday of March each year. Also called Spring Forward or Summer Time.
Daylight Saving Time Ends
123456789101112Sunday, November 7, 2027 at 2:00 amSunday, November 7, 2027 at 02:00: clocks go back 1 hour to 1:00 am01:00 (EST). DST ends on the 1st Sunday of November each year. Also called Fall Back or Winter Time.

Toronto Facts

Country
Canada
Alternative Names
Taronta, Torontas, Toronto, Torontu, Torontum, Torontó, YTO, duo lun duo, roranro, taronto, teareantea, tho rxn to, tolonto, toramto, toranto, toronto, twrntw, twrwntw, Τορόντο, Таронта, Торонто, Տորոնտո, טאראנטא, טורונטו, تورنتو, تورونتو, ٹورانٹو, ٹورنٹو, टोरण्टो, टोरन्टो, टोराँटो, तोरन्तो, টরোন্টো, ਟੋਰਾਂਟੋ, ரொறன்ரோ, టొరంటో, ಟೊರಾಂಟೋ, ടോറോണ്ടോ, โทรอนโต, တိုရွန်တိုမြို့, ტორონტო, トロント, 多伦多, 多倫多, 토론토
Population
2,794,356
Currency
Dollar (CAD)
Geographic Coordinates
43° 42' N Latitude / 79° 24' W Longitude
International Dialing Code
+1

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.

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

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.

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

Brisbane Time Zone and Facts

Time Zone

Abbreviation / Offset
AEST – Australian Eastern Standard Time, UTC+10 (no daylight saving time)

Brisbane Facts

Country
Australia
Alternative Names
BNE, Bresbens, Brisbane, Brisbane City, Brisbano, Brisbehn, Brisben, Brisbena, Brisbenas, Brisbin, Brismpein, Brizbejn, Brysben, Brėsbens, Pu-li-su-pan, Pu-lî-sṳ̂-pân, beulijeubeon, brisabena, brisben, brisbena, brizabana, brizbeni, brsbyn, brysban, bryzbn, bryzbyn, bryzbyyn, bu li si ban, bu li si ben, burisuben, pirispen, Μπρίσμπεϊν, Бризбейн, Бризбејн, Брисбен, Брисбэн, Брысбен, בריזביין, בריזבן, برسبین, برىسبان, بريزبن, بریزبن, بریزبین, بریزبێن, ब्रिसबेन, ब्रिस्बेन, ব্রিসবেন, ਬ੍ਰਿਜ਼ਬਨ, பிரிஸ்பேன், బ్రిస్బేన్, ಬ್ರಿಸ್ಬೇನ್‌, ബ്രിസ്ബെയ്ൻ, บริสเบน, ဘရစ်စဘိန်းမြို့, ბრიზბენი, ብርዝበን, ブリスベン, 布里司班, 布里斯本, 布里斯班, 브리즈번
Population
2,780,063
Currency
Dollar (AUD)
Geographic Coordinates
27° 28' S Latitude / 153° 01' E Longitude
International Dialing Code
+61
More About Brisbane

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.

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).

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