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TimezonePair
Home·Adelaide·Adelaide × Seattle
Prime meridian·:: UTC·

Adelaide×Seattle

Australia · AU
Adelaide
—:—
Australia/Adelaide·
Standard time
United States · US
Seattle
—:—
America/Los_Angeles·
DST active

Adelaide is 16.5 hours behind Seattle. Scrub a time, meet in the overlap, ship the invite — before the kettle boils.

◊ at a glance

Three numbers. The ones that decide the meeting.

01
Difference
16.5h behind
Adelaide vs Seattle
02
Overlap
1h
Business hours 09:00 – 17:00
03
UTC offsets
GMT+9:30 / GMT-7
04
Flight
16h 17m
13,417 km · great-circle, non-stop cruise
◊ the overlap

When the world meets at work.

24-hour overlap
1h shared · 09:00 – 10:00 Adelaide
Adelaide
—:—
0
3
6
9
12
15
18
21
Seattle
—:—
Scrub a meeting time14:00 Adelaide
Same moment in Seattle21:30 Seattle
◊ hour by hour

Read the day in both zones.

Share this meeting
timezonepair.com/from/adelaide/to/seattle?t=14&a=A&d=2026-05-26&dur=60
14:00 Adelaide21:30 Seattle
Full 24-hour reference
AdelaideSeattle
00:00
07:00
01:00
08:00
02:00
09:00Seattle only
03:00
10:00Seattle only
04:00
11:00Seattle only
05:00
12:00Seattle only
06:00
13:00Seattle only
07:00
14:00Seattle only
08:00
15:00Seattle only
09:00Both working
16:00
10:00Adelaide only
17:00
11:00Adelaide only
18:00
12:00Adelaide only
19:00
13:00Adelaide only
20:00
14:00Adelaide only
21:00
15:00Adelaide only
22:00
16:00Adelaide only
23:00
17:00
00:00
18:00
01:00
19:00
02:00
20:00
03:00
21:00
04:00
22:00
05:00
23:00
06:00
◊ travel essentials

Crossing the border. Money, language, plugs.

Money changes hands at the border: Adelaide uses the AUD ($) and Seattle uses the USD ($). Conversations can stay in English, which is official in both countries. Be careful behind the wheel: Adelaide drives on the left, Seattle on the right.

Adelaide
Country
Australia
Capital
Canberra
Currency
Australian dollar (AUD · $)
Language
English
Calling code
+61
Drives on
Left
Seattle
Country
United States
Capital
Washington, D.C.
Currency
United States dollar (USD · $)
Language
English
Calling code
+1
Drives on
Right
◊ common questions

Quick answers. Before you book the call.

What's the time difference between Adelaide and Seattle?

Adelaide is 16.5 hours behind Seattle. Adelaide runs on GMT+9:30 and Seattle on GMT-7. The gap can shift by an hour when either side enters or leaves daylight saving — the live clocks above always reflect the current offset.

When's the best time to schedule a meeting?

There are 1 hour where both cities are inside a 09:00–17:00 workday. Aim for the middle of that window so neither side is starting or closing out.

Does daylight saving time change the difference?

Yes, if either city observes DST. When one side shifts and the other doesn't, the gap changes by one hour. The DST badges under each clock show whether each zone is currently shifted and when the next transition lands.

How far is Adelaide from Seattle?

About 13,417 km as the crow flies (great-circle distance). A non-stop commercial flight cruises that in roughly 16h 17m, not counting airport time, winds, or routing around restricted airspace.

Can I send this meeting time as a calendar invite?

Yes. Pick a time on the slider above, open the meeting card, customize the title and duration, then download the .ics file. It imports cleanly into Google Calendar, Outlook, and Apple Calendar with the correct timezone attached.

What currency do Adelaide and Seattle use?

Adelaide uses the Australian dollar (AUD, $); Seattle uses the United States dollar (USD, $). Check the live rate before transferring money or paying with a card abroad — most banks add a 1–3 % FX margin on top of the mid-market rate.

How do I call Adelaide from Seattle?

Dial the international prefix used by your carrier (often 011), then +61, then the local number — drop any leading zero of the city or mobile code. For free calls, WhatsApp, Signal, and FaceTime work over Wi-Fi regardless of country code.

What language is spoken in Adelaide and Seattle?

Both Australia and United States count English among their official languages, so business meetings often skip translation. Adelaide also has no other official tongue; Seattle adds no other official tongue.

Do Adelaide and Seattle drive on the same side of the road?

No. Australia drives on the left, United States on the right. If you're renting, expect a learning curve on the first day — especially at roundabouts and when judging the centre of the lane.

◊ same region as Adelaide

Closer time, closer call. Pair Seattle with another Australia city.

◊ keep going

One pair down. 299 cities to go.

Every pair in 300 cities runs the same clocks, the same overlap, the same one-click invite. Pick another.

ADELAIDE · Australia/Adelaide
GMT+9:30 · -34.93°, 138.60°

SEATTLE · America/Los_Angeles
GMT-7 · 47.61°, -122.33°

1h shared · 16.5h behind