UTC
Universal Time Coordinated
GMT +0
12am
3am
6am
9am
12pm
3pm
6pm
9pm
AEST
Australian Eastern Standard Time
GMT +10
tomorrow
12am
3am
6am
9am
12pm
3pm
6pm
9pm
Australia
ACST
tomorrow
12am
3am
6am
9am
12pm
3pm
6pm
9pm
Australia
AWST
tomorrow
12am
3am
6am
9am
12pm
3pm
6pm
9pm
Australia
AEST
tomorrow
12am
3am
6am
9am
12pm
3pm
6pm
9pm

Compare UTC time with AEST, Adelaide, Perth, and Brisbane time, including current local time, UTC offsets, time difference, daylight saving changes, working hours, and shareable meeting times.

Time Difference

Universal Time Coordinated is 10 hours behind Australian Eastern Standard Time and 9 hours and 30 minutes behind ACST (Australian Central Standard Time) and 8 hours behind AWST (Australian Western Standard Time) and 10 hours behind AEST (Australian Eastern Standard Time)
4:00 pm16:00 in UTC is 2:00 am02:00 in AEST and is 1:30 am01:30 in Adelaide, Australia and is 12:00 am00:00 in Perth, Australia and is 2:00 am02:00 in Brisbane, Australia

UTC to AEST call time
Best time for a conference call or a meeting is between 7:30am-8:30am in UTC which corresponds to 5:30pm-6:30pm in AEST
UTC to Adelaide call time
Best time for a conference call or a meeting is between 8am-9am in UTC which corresponds to 5:30pm-6:30pm in Adelaide
UTC to Perth call time
Best time for a conference call or a meeting is between 8:30am-9:30am in UTC which corresponds to 4:30pm-5:30pm in Perth
UTC to Brisbane call time
Best time for a conference call or a meeting is between 7:30am-8:30am in UTC which corresponds to 5:30pm-6:30pm in Brisbane

4:00 pm16:00 Universal Time Coordinated (UTC). Offset UTC 0:00 hours
2:00 am02:00 Australian Eastern Standard Time (AEST). Offset UTC +10:00 hours
1:30 am01:30 ACST (Australian Central Standard Time) (Adelaide, Australia). Offset UTC +9:30 hours
12:00 am00:00 AWST (Australian Western Standard Time) (Perth, Australia). Offset UTC +8:00 hours
2:00 am02:00 AEST (Australian Eastern Standard Time) (Brisbane, Australia). Offset UTC +10:00 hours

4:00 pm16:00 UTC / 2:00 am02:00 AEST / 1:30 am01:30 Adelaide, Australia / 12:00 am00:00 Perth, Australia / 2:00 am02:00 Brisbane, Australia

UTCAESTAdelaide, AustraliaPerth, AustraliaBrisbane, Australia
12am (midnight)10am9:30 am8am10am
1am11am10:30 am9am11am
2am12pm (noon)11:30 am10am12pm (noon)
3am1pm12:30 pm11am1pm
4am2pm1:30 pm12pm (noon)2pm
5am3pm2:30 pm1pm3pm
6am4pm3:30 pm2pm4pm
7am5pm4:30 pm3pm5pm
8am6pm5:30 pm4pm6pm
9am7pm6:30 pm5pm7pm
10am8pm7:30 pm6pm8pm
11am9pm8:30 pm7pm9pm
12pm (noon)10pm9:30 pm8pm10pm
1pm11pm10:30 pm9pm11pm
2pm12am (midnight)11:30 pm10pm12am (midnight)
3pm1am12:30 am11pm1am
4pm2am1:30 am12am (midnight)2am
5pm3am2:30 am1am3am
6pm4am3:30 am2am4am
7pm5am4:30 am3am5am
8pm6am5:30 am4am6am
9pm7am6:30 am5am7am
10pm8am7:30 am6am8am
11pm9am8:30 am7am9am
00:0010:0009:3008:0010:00
01:0011:0010:3009:0011:00
02:0012:0011:3010:0012:00
03:0013:0012:3011:0013:00
04:0014:0013:3012:0014:00
05:0015:0014:3013:0015:00
06:0016:0015:3014:0016:00
07:0017:0016:3015:0017:00
08:0018:0017:3016:0018:00
09:0019:0018:3017:0019:00
10:0020:0019:3018:0020:00
11:0021:0020:3019:0021:00
12:0022:0021:3020:0022:00
13:0023:0022:3021:0023:00
14:0000:0023:3022:0000:00
15:0001:0000:3023:0001:00
16:0002:0001:3000:0002:00
17:0003:0002:3001:0003:00
18:0004:0003:3002:0004:00
19:0005:0004:3003:0005:00
20:0006:0005:3004:0006:00
21:0007:0006:3005:0007:00
22:0008:0007:3006:0008:00
23:0009:0008:3007:0009:00

Universal Time Coordinated

Offset: UTC is 0 hours ahead Greenwich Mean Time (GMT) and is used in Universal

Coordinated Universal Time (UTC) is the world time standard that regulates clocks and time. It is successor to Greenwich Mean Time (GMT). For casual use, UTC is the same as GMT, but is used by the scientific community.
UTC is the time standard commonly used across the world since 1972. It is used in many technical fields, like aviation industry and meteorologists, also used to synchronize time across internet networks.

UTC 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 UTC
  • Z - short form of 'Zulu'
IANA/Olson: Reflects UTC time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
  • Etc/UCT
  • Etc/UTC
  • Etc/Universal
  • Etc/Zulu
  • UCT
  • UTC
  • Universal
  • Zulu
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 - Universal Time Coordinated
  • WT - Western Sahara Standard Time
  • Z - Zulu Time Zone

Australian Eastern Standard Time

Offset: AEST is 10 hours ahead Greenwich Mean Time (GMT) and is used in Australia

Countries using this time zone: Australia

Principal Cities: The largest city in the AEST time zone is Sydney in Australia, with about 4.627 million people. Other major cities in this time zone include Melbourne, Brisbane, Gold Coast, Canberra.

AEST Time Zone Geo Map
AEST timezone map

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).

Daylight saving time clock moves back for one hour from 3am to 2amStart: Australian Eastern Standard Time (AEST) started on Sunday, April 5, 2026 at 3:00 am local time and clocks were set one hour back to Sunday, April 5, 2026, 2:00 am. Standard time starts annually on the first Sunday of April.

Daylight saving time clock moves forward for one hour from 2am to 3amEnd: Australian Eastern Standard Time (AEST) ends on Sunday, October 4, 2026 at 2:00 am local time and clocks are set one hour forward to Sunday, October 4, 2026, 3:00 am local daylight time instead. Standard time ends annually on the first Sunday of October.

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

Adelaide Information

Time Zone

Abbreviation / Name
ACST - Australian Central Standard Time
ACDT - Australian Central Daylight Time
UTC / GMT Offset
+9:30 hours during Australian Central Standard Time, currently in use.
+10:30 hours during Australian Central Daylight Time.
Daylight Saving Time Change
+1:00 hour - DST is NOT in use
Daylight Saving Time Starts
Daylight saving time clock moves forward for one hour from 2am to 3amSunday, October 4, 2026 at 2:00 am local time. DST starts annually on the 1st Sunday of October. Clocks are turned forward 1 hour to Sunday, October 4, 2026 at 3:00 am local daylight time instead. Also called Spring Forward or Summer Time.
Daylight Saving Time Ends
Daylight saving time clock moves back for one hour from 3am to 2amSunday, April 5, 2026 at 3:00 am local time. DST ends annually on the 1st Sunday of April. Clocks are turned backward 1 hour to Sunday, April 5, 2026 at 2:00 am local standard time instead. Also called Fall Back or switch to Winter Time.

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
1,225,235
Currency
Dollar (AUD)
Geographic Coordinates
34° 55' S Latitude / 138° 35' E Longitude
International Dialing Code
+61

Perth Information

Time Zone

Abbreviation / Name
AWST - Australian Western Standard Time
UTC / GMT Offset
+8:00 hours during Australian Western Standard Time, currently in use.

Perth Facts

Country
Australia
Alternative Names
PER, Peairt, Pert, Perta, Pertas, Perth, Perth City, Perthia, Perto, Perþ, Pirth, Purt, Pērta, byrth, part, partha, pasu, peoseu, pert, pheirth, po si, prt, prt', prtھ asٹrylya, Περθ, Перт, Пертһ, Пърт, Պերթ, פרת', بيرث, پرت, پرتھ، آسٹریلیا, पर्थ, பேர்த், ಪರ್ತ್, പെർത്ത്, เพิร์ท, ပါ့သ်မြို့, პერთი, パース, 珀斯, 퍼스
Population
1,896,548
Currency
Dollar (AUD)
Geographic Coordinates
31° 57' S Latitude / 115° 51' E Longitude
International Dialing Code
+61

Brisbane Information

Time Zone

Abbreviation / Name
AEST - Australian Eastern Standard Time
UTC / GMT Offset
+10:00 hours during Australian Eastern Standard Time, currently in use.

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
2,189,878
Currency
Dollar (AUD)
Geographic Coordinates
27° 28' S Latitude / 153° 01' E Longitude
International Dialing Code
+61