How many hours is PST behind AEDT?
As abbreviations, AEDT is always 19 hours ahead of PST: PST is UTC−8 and AEDT is UTC+11. To convert, add 19 hours.
Check which label you actually need: PST (Pacific Time is on PDT today). A time written with an abbreviation that is not in use is usually meant as the local time, so convert between the places instead: right now AEDT is 18 hours ahead of PST.
When the PST to AEDT time difference changes
For most of the year AEDT is 17 hours ahead of PST. From 4 October to 31 October 2026, AEDT is 18 hours ahead of PST instead, because the two places change their clocks on different dates. Meetings booked by the usual gap land an hour off in those weeks.
| Dates | AEDT vs PST | Length |
|---|---|---|
| 4 October 2026 to 31 October 2026 | 18 hours ahead | 28 days |
| 1 November 2026 to 31 December 2026 | 19 hours ahead | 61 days |
| 1 January 2027 to 13 March 2027 | 19 hours ahead | 72 days |
| 14 March 2027 to 3 April 2027 | 18 hours ahead | 21 days |
| 4 April 2027 to 2 October 2027 | 17 hours ahead | 182 days |
| 3 October 2027 to 6 November 2027 | 18 hours ahead | 35 days |
| 7 November 2027 to 31 December 2027 | 19 hours ahead | 55 days |
Best time for a meeting between PST and AEDT
- When AEDT is 17 hours ahead of PST: no shared 09:00 to 17:00 hours; one side has to take the call outside office hours.
- When AEDT is 19 hours ahead of PST: no shared 09:00 to 17:00 hours; one side has to take the call outside office hours.
- When AEDT is 18 hours ahead of PST: no shared 09:00 to 17:00 hours; one side has to take the call outside office hours.