Convert PDT to ACDT
ACDT is 17 hours 30 minutes ahead of PDT. PDT is UTC−7 and ACDT is UTC+10:30.
Right now: PDT · ACDT
Best time to schedule a meeting
Standard 9–5 working hours do not overlap at all between PDT and ACDT. Someone has to take an early or late call — or use asynchronous communication instead.
| PDT | ACDT | Suitable? |
|---|---|---|
| 9:00 AM | 2:30 AM (next day) | outside 9–5 |
| 10:00 AM | 3:30 AM (next day) | outside 9–5 |
| 11:00 AM | 4:30 AM (next day) | outside 9–5 |
| 12:00 PM | 5:30 AM (next day) | outside 9–5 |
| 1:00 PM | 6:30 AM (next day) | outside 9–5 |
| 2:00 PM | 7:30 AM (next day) | outside 9–5 |
| 3:00 PM | 8:30 AM (next day) | outside 9–5 |
| 4:00 PM | 9:30 AM (next day) | outside 9–5 |
| 5:00 PM | 10:30 AM (next day) | outside 9–5 |
PDT to ACDT conversion table
| PDT | ACDT |
|---|---|
| 12:00 AM | 5:30 PM |
| 1:00 AM | 6:30 PM |
| 2:00 AM | 7:30 PM |
| 3:00 AM | 8:30 PM |
| 4:00 AM | 9:30 PM |
| 5:00 AM | 10:30 PM |
| 6:00 AM | 11:30 PM |
| 7:00 AM | 12:30 AM (next day) |
| 8:00 AM | 1:30 AM (next day) |
| 9:00 AM | 2:30 AM (next day) |
| 10:00 AM | 3:30 AM (next day) |
| 11:00 AM | 4:30 AM (next day) |
| 12:00 PM | 5:30 AM (next day) |
| 1:00 PM | 6:30 AM (next day) |
| 2:00 PM | 7:30 AM (next day) |
| 3:00 PM | 8:30 AM (next day) |
| 4:00 PM | 9:30 AM (next day) |
| 5:00 PM | 10:30 AM (next day) |
| 6:00 PM | 11:30 AM (next day) |
| 7:00 PM | 12:30 PM (next day) |
| 8:00 PM | 1:30 PM (next day) |
| 9:00 PM | 2:30 PM (next day) |
| 10:00 PM | 3:30 PM (next day) |
| 11:00 PM | 4:30 PM (next day) |
About PDT
Pacific Daylight Time (PDT) is UTC−7. It is used in Los Angeles, San Francisco and Seattle from March to November.
Pacific Daylight Time is UTC−7, the summer clock for Los Angeles, San Francisco, Seattle and Vancouver. It is the zone most product launches and software release times are quoted in, and it is worth converting rather than eyeballing: PDT is eight hours behind British Summer Time, not seven, because both sides have moved.
About ACDT
Australian Central Daylight Time (ACDT) is UTC+10:30. It is used in Adelaide in summer.
Australian Central Daylight Time is UTC+10:30, what South Australia keeps from October to April. Darwin stays on ACST through the summer, so for those months two cities in the same nominal zone are an hour apart — the only reason to be precise about which of the two abbreviations a meeting invitation carries.
Does this gap change with the seasons?
This gap is seasonal. The abbreviations themselves are fixed offsets, but the region on PDT switches to PST (UTC−8) from November to March. So the 17.5-hour figure on this page is correct for the part of the year when both places are actually on these abbreviations, and changes by an hour outside it.
ACDT does not shift, so the whole change comes from one side. A recurring meeting fixed in ACDT will appear to move by an hour for everyone on the other side, twice a year, without anyone changing anything.
This is the reason scheduling systems store an IANA zone such as Region/City rather than an offset or an abbreviation: the zone knows its own rules and the offset does not.
Frequently asked questions
What time is 9:00 AM PDT in ACDT?
9:00 AM PDT is 2:30 AM ACDT (next day).
Is ACDT ahead of PDT?
ACDT is 17 hours 30 minutes ahead of PDT.
Which time zone does this use?
PDT is UTC−7 and ACDT is UTC+10:30. Both abbreviations denote a single fixed offset, so this conversion never shifts with daylight saving — what changes is which abbreviation a place is using at the time.