Seattle to Perth time converter

Perth is 15 hours ahead of Seattle. When it is 9:00 AM in Seattle, it is 12:00 AM (Sun, Oct 18) in Perth.

Seattle PDT

Saturday, October 17, 2026

Perth AWST

Saturday, October 17, 2026

Seattle
Washington, United States
Sat, Oct 17
PDTUTC-7
Perth
Western Australia, Australia
Sat, Oct 17
AWSTUTC+8+15h
Finding your time zone…
Shared working hours (9:00–18:00)

Seattle to Perth conversion table

Every hour of today in Seattle and the matching time in Perth. Light rows are typical working hours (9:00–18:00).

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

Best time to call or meet

Working hours don't overlap fully. The closest fit is 4:00 PM – 6:00 PM in Seattle (7:00 AM – 9:00 AM in Perth): working hours on one side, early or late on the other.

Daylight saving time and the difference

The difference changes during the year because Seattle and Perth switch clocks on different dates:

  • Oct 17, 2026 – Nov 1, 2026: +15h
  • Nov 1, 2026 – Mar 14, 2027: +16h
  • Mar 14, 2027 – Oct 17, 2027: +15h

Distance

Seattle and Perth are 14,880 km (9,246 miles) apart in a straight line.

More conversions

Perth to SeattleSeattle to New YorkSeattle to LondonSeattle to Los AngelesSeattle to ChicagoSeattle to TorontoSeattle to São PauloSeattle to ParisSeattle to BerlinSeattle to MoscowSeattle to DubaiSeattle to New DelhiSeattle to Bangkok
New York to PerthLondon to PerthLos Angeles to PerthChicago to PerthToronto to PerthSão Paulo to PerthParis to PerthBerlin to PerthMoscow to PerthDubai to PerthNew Delhi to PerthBangkok to Perth

Questions and answers

What is the time difference between Seattle and Perth?

Perth is 15 hours ahead of Seattle.

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

When it is 9:00 AM in Seattle, it is 12:00 AM (Sun, Oct 18) in Perth.

When is the best time to call Perth from Seattle?

Working hours don't overlap fully. The closest fit is 4:00 PM – 6:00 PM in Seattle (7:00 AM – 9:00 AM in Perth): working hours on one side, early or late on the other.

Does the time difference between Seattle and Perth change?

Yes, for part of the year, because daylight saving time starts and ends on different dates or applies on one side only.