Seattle is 18 hours behind Australian Eastern Time.

Frequently asked

Quick answers about converting between Seattle and Australian Eastern Time. Can't find what you need? Email [email protected].

What is the time difference between Seattle and Australian Eastern Time?

Seattle is 18 hours behind Australian Eastern Time right now. We always show the live, daylight-saving-correct difference, so this figure already accounts for whichever side is observing summer time today.

When it's 9am in Seattle, what time is it in Australian Eastern Time?

9am in Seattle is 3am in Australian Eastern Time on the next day. Use the hour-by-hour table above to read any other time across — find the row and read the matching cell in the other column.

What's the best time for a call between Seattle and Australian Eastern Time?

3pm–5pm in Seattle lines up with 9am–11am in Australian Eastern Time the next day — both sides are inside a 9-to-5 working day.

Does this account for daylight saving time?

Yes. We track every clock change in both places, so the abbreviations you see — PDT and AEDT — are the ones actually in effect right now, not a fixed all-year value. When either side changes its clocks, this page updates automatically.

Why is the date sometimes different on each side?

When two places are far enough apart, the same moment can fall on different calendar days. That is why some conversions are marked "previous day" or "next day" — it is the same instant in time, read off two clocks that crossed midnight at different points.