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PST to ACST Converter

Updating current time…
PDT/PST
Pacific Daylight Time
GMT -7
12am
3am
6am
9am
12pm
3pm
6pm
9pm
Pacific Time is on daylight saving time: PDT (UTC−7) until Sun, Nov 1.
Use PST all year (UTC−8)
ACST
Australian Central Standard Time
GMT +9:30
12am
3am
6am
9am
12pm
3pm
6pm
9pm

Quick answers

Selected conversion

5:00 am05:00 PDT (UTC-7), Oct 3, 2026 = 9:30 pm21:30 ACST (UTC+9:30), Oct 3, 2026

PDT is 16 hours and 30 minutes behind ACST.

PST and ACST examples

These examples always use PST (UTC-8) and ACST (UTC+9:30). They stay the same when you change the date or time above. The selected conversion may differ when daylight saving time applies.

PST is 17 hours and 30 minutes behind ACST.

PST uses UTC-8 during standard time. For Pacific Time that follows daylight saving time, use PT to ACST. For daylight-time examples, use PDT to ACST.

How the time difference changes

For most of the year, PDT is 16 hours and 30 minutes behind ACST. At other times of the year, PST is 17 hours and 30 minutes behind ACST.

For most of the year, working hours of 9:00 am to 5:00 pm in PDT correspond to 1:30 am (next day) to 9:30 am (next day) in ACST. At other times of the year, working hours of 9:00 am to 5:00 pm in PST correspond to 2:30 am (next day) to 10:30 am (next day) in ACST.For most of the year, working hours of 09:00 to 17:00 in PDT correspond to 01:30 (next day) to 09:30 (next day) in ACST. At other times of the year, working hours of 09:00 to 17:00 in PST correspond to 02:30 (next day) to 10:30 (next day) in ACST.

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

Time Difference

Pacific Daylight Time is 16 hours and 30 minutes behind Australian Central Standard Time.
5:00 am05:00 in PDT is 9:30 pm21:30 in ACST

PDT to ACST call time
Best time for a conference call or a meeting is between 4:30pm-5pm16:30-17:00 in PDT which corresponds to 9am-9:30am09:00-09:30 in ACST (next day)

5:00 am05:00 Pacific Daylight Time (PDT). Offset UTC -7:00 hours
9:30 pm21:30 Australian Central Standard Time (ACST). Offset UTC +9:30 hours

5:00 am05:00 PDT / 9:30 pm21:30 ACST

PDTACST
12:00am4:30pm
1:00am5:30pm
2:00am6:30pm
3:00am7:30pm
4:00am8:30pm
5:00am9:30pm
6:00am10:30pm
7:00am11:30pm
8:00am12:30am
9:00am1:30am
10:00am2:30am
11:00am3:30am
12:00pm4:30am
1:00pm5:30am
2:00pm6:30am
3:00pm7:30am
4:00pm8:30am
5:00pm9:30am
6:00pm10:30am
7:00pm11:30am
8:00pm12:30pm
9:00pm1:30pm
10:00pm2:30pm
11:00pm3:30pm
00:0016:30
01:0017:30
02:0018:30
03:0019:30
04:0020:30
05:0021:30
06:0022:30
07:0023:30
08:0000:30
09:0001:30
10:0002:30
11:0003:30
12:0004:30
13:0005:30
14:0006:30
15:0007:30
16:0008:30
17:0009:30
18:0010:30
19:0011:30
20:0012:30
21:0013:30
22:0014:30
23:0015:30

Pacific Standard Time

Offset: PST is 8 hours behind Greenwich Mean Time (GMT) and is used in North America

Countries using this time zone: Canada, 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

PST Time Zone Geo Map
PST 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 Pacific Daylight Time (PDT).

Daylight saving time clock moves forward for one hourEnd: Pacific Standard Time (PST) ended 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 local daylight time instead. Standard time ends annually on the second Sunday of March.

Daylight saving time clock moves back for one hourStart: Pacific Standard Time (PST) starts 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. Standard time starts annually on the first Sunday of November.

See 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

Australian Central Standard Time

Offset: ACST is 9 hours and 30 minutes ahead Greenwich Mean Time (GMT) and is used in Australia

Countries using this time zone: Australia

Principal Cities: The largest city in the ACST time zone is Adelaide in Australia, with about 1.469 million people. Other major cities in this time zone include Darwin, Adelaide Hills, Palmerston, Alice Springs.

ACST Time Zone Geo Map
ACST 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 Central Daylight Time (ACDT).

Daylight saving time clock moves back for one hourStart: Australian Central Standard Time (ACST) started on Sunday, April 5, 2026 at 3:00 am03:00 local time and clocks were set one hour back to Sunday, April 5, 2026, 2:00 am02:00. Standard time starts annually on the first Sunday of April.

Daylight saving time clock moves forward for one hourEnd: Australian Central Standard Time (ACST) ends on Sunday, October 4, 2026 at 2:00 am02:00 local time and clocks are 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.

See upcoming clock changes worldwide.

ACST representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • +0930 - basic
  • +09:30 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • +0930 - sign character (+) followed by a four digit time providing hours (09) and minutes (30) of the offset. Indicates an offset of nine hours and thirty minutes to the east of the zero meridian.
IANA/Olson: Reflects ACST time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
  • Australia/Adelaide
  • Australia/Broken_Hill
  • Australia/Darwin
  • Australia/North
  • Australia/South
  • Australia/Yancowinna
EST to ISTGMT to ESTPST to ESTEST to GMTPST to GMT