What is the best time for a video call between Seattle and Sydney?

The optimal meeting window within standard business hours (9:00 AM – 5:00 PM) is 3:00 PM - 6:00 PM in Seattle, which corresponds to 9:00 AM - 12:00 PM in Sydney (3 shared working hours).

What is the flight time and direct distance between Seattle and Sydney?

The direct geodesic distance is approximately 12,470 km (7,748 miles). An estimated non-stop commercial flight takes approximately ~15h 42m.

Live Real-Time Sync

DST Observed

SEA (PST/PDT UTC-8) → SYD (AEST/AEDT UTC+10)

Seattle to Sydney Time Difference

Instant Answer

⇄ Swap: Sydney to Seattle

“Sydney is 18 hours ahead of Seattle. When it is 12:00 PM in Seattle, it is 6:00 AM in Sydney.”

Direct Distance

12,470 km

7,748 miles

Flight Time

~15h 42m

Non-stop estimate

Business Overlap

3 Hours

3:00 PM - 6:00 PM

User Rating

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1,420 Verified Votes

Calendar note: Standard Monday – Friday business week alignment.

Seattle

United States

12:00:00 PM

America/Los_Angeles • UTC-8

Sydney

Australia

08:00:00 PM

Australia/Sydney • UTC+10

Interactive Meeting & Time Converter

Drag the time slider to coordinate working hours and schedule meetings across time zones.

Seattle:14:00 (2:00 PM)08:00 (8:00 AM)(+1 Day)

00:00 (Midnight)06:00 (Morning)12:00 (Noon)18:00 (Evening)23:00 (Night)

Outside regular business hours in one or both cities

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24-Hour Time Conversion Table (Seattle vs Sydney)

Seattle (SEA)	Sydney (SYD)	Overlap Window
00:00	18:00	Off Hours
01:00	19:00	Off Hours
02:00	20:00	Off Hours
03:00	21:00	Off Hours
04:00	22:00	Off Hours
05:00	23:00	Off Hours
06:00	00:00	Off Hours
07:00	01:00	Off Hours
08:00	02:00	Off Hours
09:00	03:00	Off Hours
10:00	04:00	Off Hours
11:00	05:00	Off Hours
12:00	06:00	Off Hours
13:00	07:00	Off Hours
14:00	08:00	Off Hours
15:00	09:00	Work Hours Overlap
16:00	10:00	Work Hours Overlap
17:00	11:00	Work Hours Overlap
18:00	12:00	Off Hours
19:00	13:00	Off Hours
20:00	14:00	Off Hours
21:00	15:00	Off Hours
22:00	16:00	Off Hours
23:00	17:00	Off Hours

Popular Global Time Difference Routes

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Frequently Asked Questions

Common Questions About Seattle to Sydney

Everything you need to know regarding specifications, syntax, and security best practices.

Sydney is 18 hours ahead of Seattle. When it is 12:00 PM in Seattle, it is 6:00 AM in Sydney. Both cities follow their respective regional timezones (America/Los_Angeles UTC-8 and Australia/Sydney UTC+10).