Question 1

What is the time difference between PST and ACST?

Accepted Answer

Australian Central Standard Time (ACST) is 18 hours and 30 minutes ahead of Pacific Standard Time (PST). Use the conversion table above to see the exact time for each hour.

Question 2

How do I convert PST to ACST?

Accepted Answer

To convert PST to ACST, add 18 hours and 30 minutes to the PST time. For example, 9:00 AM PST is 3:30 AM ACST.

Question 3

What time is it in ACST when it's noon in PST?

Accepted Answer

When it's 12:00 PM (noon) in PST, it's 6:30 AM in ACST. ACST is 18 hours and 30 minutes ahead of PST.

Question 4

How many hours ahead is ACST from PST?

Accepted Answer

ACST is 18 hours and 30 minutes ahead of PST. This means when it's 9:00 AM in PST, it's 3:30 AM in ACST.

Question 5

Is ACST ahead or behind PST?

Accepted Answer

ACST is ahead of PST by 18 hours and 30 minutes. Clocks in ACST show a later time than PST.

Question 6

Does PST observe daylight saving time?

Accepted Answer

Yes, Pacific Standard Time observes daylight saving time. During DST, the abbreviation changes to PDT and clocks move forward by one hour.

Question 7

Does ACST observe daylight saving time?

Accepted Answer

Yes, Australian Central Standard Time observes daylight saving time. During DST, the abbreviation changes to ACDT and clocks move forward by one hour.

Question 8

What is the best time to call from PST to ACST?

Accepted Answer

The best time for a call between PST and ACST is during overlapping business hours (9 AM – 5 PM) in both timezones. Check the color-coded conversion table above — green hours indicate business hours in both zones.

Question 9

When does daylight saving time change in PST?

Accepted Answer

Daylight saving time transitions vary by year and region. Pacific Standard Time observes DST, which typically shifts clocks forward by one hour in spring and back in fall. During DST transitions, the time difference between PST and ACST may temporarily change. Check our DST change calendar for exact dates.

Question 10

Do PST and ACST ever have the same time?

Accepted Answer

No, PST and ACST are always 18 hours and 30 minutes apart. Both timezones observe DST, so the difference remains consistent.

Pacific Standard Time (PST)	Period	Australian Central Standard Time (ACDT)	Period
12:00 AM	Night	6:30 PM	Evening
1:00 AM	Night	7:30 PM	Evening
2:00 AM	Night	8:30 PM	Evening
3:00 AM	Night	9:30 PM	Evening
4:00 AM	Night	10:30 PM	Evening
5:00 AM	Night	11:30 PM	Evening
6:00 AM	Morning	12:30 AM+1d	Night
7:00 AM	Morning	1:30 AM+1d	Night
8:00 AM	Morning	2:30 AM+1d	Night
9:00 AM	Business	3:30 AM+1d	Night
10:00 AM	Business	4:30 AM+1d	Night
11:00 AM	Business	5:30 AM+1d	Night
12:00 PM	Business	6:30 AM+1d	Morning
1:00 PM	Business	7:30 AM+1d	Morning
2:00 PM	Business	8:30 AM+1d	Morning
3:00 PM	Business	9:30 AM+1d	Business
4:00 PM	Business	10:30 AM+1d	Business
5:00 PM	Business	11:30 AM+1d	Business
6:00 PM	Evening	12:30 PM+1d	Business
7:00 PM	Evening	1:30 PM+1d	Business
8:00 PM	Evening	2:30 PM+1d	Business
9:00 PM	Evening	3:30 PM+1d	Business
10:00 PM	Evening	4:30 PM+1d	Business
11:00 PM	Evening	5:30 PM+1d	Business

PST to ACST Converter

Timezone Details

24-Hour Overview

PST to ACST Conversion Table

Frequently Asked Questions

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