Sydney to Seattle Time Converter
Set a time in Sydney and read it off in Seattle. Drag the slider to move through the day, or add more cities to the board.
Right now it is 4:42 PM in Sydney and 11:42 PM in Seattle. Seattle is 17 hours behind Sydney.
Every hour, side by side
Sydney on the left, Seattle on the right, for a normal working day.
| Sydney | Seattle | Overlap |
|---|---|---|
| 6 am | 1:00 PM previous day | Sydney asleep |
| 7 am | 2:00 PM previous day | Outside 9–5 |
| 8 am | 3:00 PM previous day | Workable for both |
| 9 am | 4:00 PM previous day | Both at work |
| 10 am | 5:00 PM previous day | Workable for both |
| 11 am | 6:00 PM previous day | Outside 9–5 |
| 12 pm | 7:00 PM previous day | Outside 9–5 |
| 1 pm | 8:00 PM previous day | Outside 9–5 |
| 2 pm | 9:00 PM previous day | Outside 9–5 |
| 3 pm | 10:00 PM previous day | Seattle asleep |
| 4 pm | 11:00 PM previous day | Seattle asleep |
| 5 pm | 12:00 AM | Seattle asleep |
| 6 pm | 1:00 AM | Seattle asleep |
| 7 pm | 2:00 AM | Seattle asleep |
| 8 pm | 3:00 AM | Seattle asleep |
| 9 pm | 4:00 AM | Seattle asleep |
| 10 pm | 5:00 AM | Both asleep |
Who is awake when
Each column is one hour of the selected day in Sydney. Click a column to move the whole board to that hour.
Planning a call between Sydney and Seattle
Best window: 9 am to 10 am in Sydney (4:00 PM to 5:00 PM in Seattle). In that stretch both cities sit inside core 9-to-5 hours, so neither side takes the call early or late.
Daylight saving
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.
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.