PST to ACST
Converting a fixed time. America/Los_Angeles → Australia/Adelaide
Clocks go back 1 hour on Sunday, 1st November 2026, at 1:59 am local time (1:00 am after the change).
Clocks go forward 1 hour on Sunday, 4th October 2026, at 1:59 am local time (3:00 am after the change).
Convert a specific time minutes work, not just whole hours
Hour by hour
| PST | ACST | 24h | Good to call? |
|---|---|---|---|
| 12am | 4pm | 00:00 → 16:30 | asleep in PST |
| 1am | 5pm | 01:00 → 17:30 | asleep in PST |
| 2am | 6pm | 02:00 → 18:30 | asleep in PST |
| 3am | 7pm | 03:00 → 19:30 | asleep in PST |
| 4am | 8pm | 04:00 → 20:30 | asleep in PST |
| 5am | 9pm | 05:00 → 21:30 | asleep in PST |
| 6am | 10pm | 06:00 → 22:30 | asleep in ACST |
| 7am | 11pm | 07:00 → 23:30 | asleep in ACST |
| 8am | 12am Thu | 08:00 → 00:30 | asleep in ACST |
| 9am | 1am Thu | 09:00 → 01:30 | asleep in ACST |
| 10am | 2am Thu | 10:00 → 02:30 | asleep in ACST |
| 11am | 3am Thu | 11:00 → 03:30 | asleep in ACST |
| 12pm | 4am Thu | 12:00 → 04:30 | asleep in ACST |
| 1pm | 5am Thu | 13:00 → 05:30 | asleep in ACST |
| 2pm | 6am Thu | 14:00 → 06:30 | asleep in ACST |
| 3pm | 7am Thu | 15:00 → 07:30 | awake, not at work |
| 4pm | 8am Thu | 16:00 → 08:30 | awake, not at work |
| 5pm | 9am Thu | 17:00 → 09:30 | awake, not at work |
| 6pm | 10am Thu | 18:00 → 10:30 | awake, not at work |
| 7pm | 11am Thu | 19:00 → 11:30 | awake, not at work |
| 8pm | 12pm Thu | 20:00 → 12:30 | awake, not at work |
| 9pm | 1pm Thu | 21:00 → 13:30 | awake, not at work |
| 10pm | 2pm Thu | 22:00 → 14:30 | asleep in PST |
| 11pm now | 3pm Thu | 23:00 → 15:30 | asleep in PST |
Call times
There is no hour when both places are inside normal working hours. The least bad slot is usually early morning at the western end.
4pm
5pm
6pm
7pm
8pm
9pm
10pm
11pm
12am
1am
2am
3am
4am
5am
6am
7am
8am
9am
10am
11am
12pm
1pm
2pm
3pm
Questions people ask
What time is it in ACST when it is 5:00 pm in PST?
9:30 am in ACST the next day.
How many hours ahead is ACST of PST?
ACST is 16 hours 30 minutes ahead PST. That gap is not fixed: it changes when either place starts or ends daylight saving. The table on this page is recalculated for today, so it is already correct for the current season.
What is the best time to call between PST and ACST?
There is no hour when both places are inside normal working hours. The least bad slot is usually early morning at the western end.
When does the difference between PST and ACST change?
PST: Clocks go back 1 hour on Sunday, 1st November 2026, at 1:59 am local time (1:00 am after the change). ACST: Clocks go forward 1 hour on Sunday, 4th October 2026, at 1:59 am local time (3:00 am after the change).