Time difference
Seattle to Sydney Time Difference
Sydney is 18 hours ahead of Seattle — when it's 12:00 PM in Seattle, it's 6:00 AM the next day in Sydney. (Seattle (America/Los_Angeles, PDT); Sydney (Australia/Sydney, AEDT).) Below: live local times, the best hours for a call, a full conversion table, and exact daylight-saving dates.
Sydney is 18 hours ahead of Seattle. The best window for a call is 3 PM–5 PM in Seattle, which is 9 AM–11 AM in Sydney — a 2-hour overlap inside 9 AM–5 PM on both sides. Clocks change on November 1, 2026, which briefly shifts the gap between Seattle and Sydney — the converter on this page always reflects the correct offset for the date you pick.
- When it's 9:00 AM in Seattle, it's 3:00 AM the next day in Sydney.
- When it's 9:00 AM in Sydney, it's 3:00 PM the previous day in Seattle.
Sydney is currently 18 hours ahead of Seattle.
Interactive converter
12:00PM
Select both cities to see the converted time.
Best times to meet
The 9 AM – 5 PM business windows in Seattle and Sydney overlap for 2 hours. 3 PM–5 PM in Seattle is 9 AM–11 AM in Sydney. Aim somewhere in the middle of that window so neither side starts cold or finishes drained.
Quick conversion table
| Seattle | Sydney |
|---|---|
| 12 AM | 6:00 PM |
| 1 AM | 7:00 PM |
| 2 AM | 8:00 PM |
| 3 AM | 9:00 PM |
| 4 AM | 10:00 PM |
| 5 AM | 11:00 PM |
| 6 AM | 12:00 AM (next day) |
| 7 AM | 1:00 AM (next day) |
| 8 AM | 2:00 AM (next day) |
| 9 AM | 3:00 AM (next day) |
| 10 AM | 4:00 AM (next day) |
| 11 AM | 5:00 AM (next day) |
| 12 PM | 6:00 AM (next day) |
| 1 PM | 7:00 AM (next day) |
| 2 PM | 8:00 AM (next day) |
| 3 PM | 9:00 AM (next day) |
| 4 PM | 10:00 AM (next day) |
| 5 PM | 11:00 AM (next day) |
| 6 PM | 12:00 PM (next day) |
| 7 PM | 1:00 PM (next day) |
| 8 PM | 2:00 PM (next day) |
| 9 PM | 3:00 PM (next day) |
| 10 PM | 4:00 PM (next day) |
| 11 PM | 5:00 PM (next day) |
Daylight saving
On November 1, 2026, Seattle shifts for daylight saving. After that, Sydney will be 19 hours ahead of Seattle (currently 18 hours ahead of Seattle). The converter and the tables above always reflect the correct offset for the date you pick.
- Seattle is currently observing daylight saving time.
- Sydney is currently observing daylight saving time.
Frequently asked questions
- Is Sydney ahead of or behind Seattle?
- Sydney is 18 hours ahead of Seattle.
- How many hours ahead of Seattle is Sydney?
- Sydney is 18 hours ahead of Seattle.
- What time is 9 AM in Seattle in Sydney?
- 9:00 AM in Seattle is 3:00 AM the next day in Sydney.
- What time is noon in Seattle in Sydney?
- 12:00 PM in Seattle is 6:00 AM the next day in Sydney.
- What time is 5 PM in Seattle in Sydney?
- 5:00 PM in Seattle is 11:00 AM the next day in Sydney. Useful for end-of-day handoffs between the two offices.
- What time is 3 PM in Seattle in Sydney?
- 3:00 PM in Seattle is 9:00 AM the next day in Sydney.
- Is Seattle currently observing daylight saving time?
- Seattle is currently observing daylight saving time (summer time).
- Is Sydney currently observing daylight saving time?
- Sydney is currently observing daylight saving time (summer time).
- Do Seattle and Sydney observe daylight saving?
- On November 1, 2026, Seattle shifts for daylight saving. After that, Sydney will be 19 hours ahead of Seattle (currently 18 hours ahead of Seattle). The converter and the tables above always reflect the correct offset for the date you pick.
- When is the best time to call Sydney from Seattle?
- Aim for 3 PM–5 PM in Seattle, which is 9 AM–11 AM in Sydney.
- When is the best time to call Seattle from Sydney?
- Aim for 9 AM–11 AM in Sydney, which is 3 PM–5 PM in Seattle.
- Seattle (PDT) to Sydney (AEDT) — how do I convert quickly?
- Add 18 hours to Seattle local time to get Sydney local time. Or use the converter at the top of this page — it stays accurate through daylight-saving changes automatically.
Other conversions
- New York to Seattle
- London to Seattle
- Seattle to Tokyo
- Dubai to Seattle
- Seattle to Singapore
- Los Angeles to Seattle
- Paris to Seattle
- Mumbai to Seattle
- Hong Kong to Seattle
- San Francisco to Seattle