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Time difference between Sydney and Seattle

Seattle is 18 hours behind Sydney.

Sydney
Australia · Australian Eastern Daylight Time
6:42 PM
Wednesday, October 21, 2026
Seattle
United States · Pacific Daylight Time
12:42 AM
Wednesday, October 21, 2026
Compare more placesSeattle to Sydney

Sydney to Seattle time converter

Green rows are office hours in both places; light green rows are when both are awake.

SydneySeattle
12:00 AM6:00 AM (previous day)
1:00 AM7:00 AM (previous day)
2:00 AM8:00 AM (previous day)
3:00 AM9:00 AM (previous day)
4:00 AM10:00 AM (previous day)
5:00 AM11:00 AM (previous day)
6:00 AM12:00 PM (previous day)
7:00 AM1:00 PM (previous day)
8:00 AM2:00 PM (previous day)
9:00 AM3:00 PM (previous day)
10:00 AM4:00 PM (previous day)
11:00 AM5:00 PM (previous day)
12:00 PM6:00 PM (previous day)
1:00 PM7:00 PM (previous day)
2:00 PM8:00 PM (previous day)
3:00 PM9:00 PM (previous day)
4:00 PM10:00 PM (previous day)
5:00 PM11:00 PM (previous day)
6:00 PM12:00 AM
7:00 PM1:00 AM
8:00 PM2:00 AM
9:00 PM3:00 AM
10:00 PM4:00 AM
11:00 PM5:00 AM

Questions

What is the time difference between Sydney and Seattle?

Seattle is 18 hours behind Sydney. Sydney is on UTC+11 and Seattle is on UTC−7.

What time is it in Seattle when it is 9 AM in Sydney?

When it is 9:00 AM in Sydney, it is 3:00 PM the previous day in Seattle.

When is the best time to call Seattle from Sydney?

The best time to call or meet is 9:00 AM–12:00 PM in Sydney (3:00 PM–6:00 PM in Seattle), when both places are in normal office hours.

Does the time difference between Sydney and Seattle change?

Yes. Because of daylight saving time, the difference changes on Sunday, November 1, 2026, when Seattle will be 19 hours behind Sydney.

Sydney is 18 hours ahead of Seattle. More: time in Sydney · time in Seattle

Time difference from Sydney to other cities

All Sydney time differences →

Time difference from Seattle