Seattle to Sydney Time Converter
Set a time in Seattle and read it off in Sydney. Drag the slider to move through the day, or add more cities to the board.
Right now it is 11:42 PM in Seattle and 4:42 PM in Sydney. Sydney is 17 hours ahead of Seattle.
Every hour, side by side
Seattle on the left, Sydney on the right, for a normal working day.
| Seattle | Sydney | Overlap |
|---|---|---|
| 6 am | 11:00 PM | Both asleep |
| 7 am | 12:00 AM next day | Sydney asleep |
| 8 am | 1:00 AM next day | Sydney asleep |
| 9 am | 2:00 AM next day | Sydney asleep |
| 10 am | 3:00 AM next day | Sydney asleep |
| 11 am | 4:00 AM next day | Sydney asleep |
| 12 pm | 5:00 AM next day | Sydney asleep |
| 1 pm | 6:00 AM next day | Sydney asleep |
| 2 pm | 7:00 AM next day | Outside 9–5 |
| 3 pm | 8:00 AM next day | Workable for both |
| 4 pm | 9:00 AM next day | Both at work |
| 5 pm | 10:00 AM next day | Workable for both |
| 6 pm | 11:00 AM next day | Outside 9–5 |
| 7 pm | 12:00 PM next day | Outside 9–5 |
| 8 pm | 1:00 PM next day | Outside 9–5 |
| 9 pm | 2:00 PM next day | Outside 9–5 |
| 10 pm | 3:00 PM next day | Seattle asleep |
Who is awake when
Each column is one hour of the selected day in Seattle. Click a column to move the whole board to that hour.
Planning a call between Seattle and Sydney
Best window: 4 pm to 5 pm in Seattle (9:00 AM to 10:00 AM in Sydney). In that stretch both cities sit inside core 9-to-5 hours, so neither side takes the call early or late.
Daylight saving
Seattle is on UTC−7 (PDT). Clocks go back one hour on Sunday, November 1, 2026, moving it to UTC−8. Between that date and the other city’s own change, the gap between them is an hour different from usual.
Sydney is on UTC+10 (AEST). Clocks go forward one hour on Sunday, October 4, 2026, moving it to UTC+11. Between that date and the other city’s own change, the gap between them is an hour different from usual.