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Perth, Australia to AST

Perth
Australia
AWST
12am
3am
6am
9am
12pm
3pm
6pm
9pm
AST
Atlantic Standard Time
GMT -4
12am
3am
6am
9am
12pm
3pm
6pm
9pm

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

Time Difference

AWST (Australian Western Standard Time) is 12 hours ahead of Atlantic Standard Time
8:00 pm20:00 in Perth, Australia is 8:00 am08:00 in AST

Perth to AST call time
Best time for a conference call or a meeting is between 7pm-8pm in Perth which corresponds to 7am-8am in AST

8:00 pm20:00 AWST (Australian Western Standard Time) (Perth, Australia). Offset UTC +8:00 hours
8:00 am08:00 Atlantic Standard Time (AST). Offset UTC -4:00 hours

8:00 pm20:00 Perth, Australia / 8:00 am08:00 AST

Perth, AustraliaAST
12am (midnight)12pm (noon)
1am1pm
2am2pm
3am3pm
4am4pm
5am5pm
6am6pm
7am7pm
8am8pm
9am9pm
10am10pm
11am11pm
12pm (noon)12am (midnight)
1pm1am
2pm2am
3pm3am
4pm4am
5pm5am
6pm6am
7pm7am
8pm8am
9pm9am
10pm10am
11pm11am
00:0012:00
01:0013:00
02:0014:00
03:0015:00
04:0016:00
05:0017:00
06:0018:00
07:0019:00
08:0020:00
09:0021:00
10:0022:00
11:0023:00
12:0000:00
13:0001:00
14:0002:00
15:0003:00
16:0004:00
17:0005:00
18:0006:00
19:0007:00
20:0008:00
21:0009:00
22:0010:00
23:0011:00

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

Atlantic Standard Time

Offset: AST is 4 hours behind Greenwich Mean Time (GMT) and is used in North America

Countries using this time zone: Antigua & Barbuda, Anguilla, Aruba, Barbados, St Barthelemy, Bermuda, Caribbean NL, Canada, Curaçao, Dominica, Dominican Republic, Grenada, Greenland, Guadeloupe, St Kitts & Nevis, St Lucia, St Martin (French), Martinique, Montserrat, Puerto Rico, St Maarten (Dutch), Trinidad & Tobago, St Vincent, Virgin Islands (UK), Virgin Islands (US)

Principal Cities: The largest city in the AST time zone is Santo Domingo in Dominican Republic, with about 2.202 million people. Other major cities in this time zone include Santiago de los Caballeros, Santo Domingo Oeste, San Juan, Halifax.

French: HNA - Heure Normale de l'Atlantique

Spanish: AST - Tiempo Estándar del Atlántico

AST Time Zone Geo Map
AST 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 Atlantic Daylight Time (ADT).

Daylight saving time clock moves back for one hour from 2am to 1amStart: Atlantic Standard Time (AST) started on Sunday, November 2, 2025 at 2:00 am local time and clocks were set one hour back to Sunday, November 2, 2025, 1:00 am. Standard time starts annually on the first Sunday of November.

Daylight saving time clock moves forward for one hour from 2am to 3amEnd: Atlantic Standard Time (AST) ends on Sunday, March 8, 2026 at 2:00 am local time and clocks are set one hour forward to Sunday, March 8, 2026, 3:00 am local daylight time instead. Standard time ends annually on the second Sunday of March.

AST 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 AST
  • Q - short form of 'Quebec'
IANA/Olson: Reflects AST time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
  • America/Anguilla
  • America/Antigua
  • America/Aruba
  • America/Barbados
  • America/Blanc-Sablon
  • America/Curacao
  • America/Dominica
  • America/Glace_Bay
  • America/Goose_Bay
  • America/Grenada
  • America/Guadeloupe
  • America/Halifax
  • America/Kralendijk
  • America/Lower_Princes
  • America/Marigot
  • America/Martinique
  • America/Moncton
  • America/Montserrat
  • America/Port_of_Spain
  • America/Puerto_Rico
  • America/Santo_Domingo
  • America/St_Barthelemy
  • America/St_Kitts
  • America/St_Lucia
  • America/St_Thomas
  • America/St_Vincent
  • America/Thule
  • America/Tortola
  • America/Virgin
  • Atlantic/Bermuda
  • Canada/Atlantic
AST Abbreviation: Several time zones share AST abbreviation and it could refer to these time zones
  • Atlantic Standard Time - UTC -4
  • Arabia Standard Time - UTC +3
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
  • FKT - Falkland Island Time
  • GYT - Guyana Time
  • HLV - Hora Legal de Venezuela
  • PYT - Paraguay Time
  • Q - Quebec Time Zone
  • VET - Venezuelan Standard Time
EST to ISTGMT to ESTPST to ESTEST to GMTPST to GMT