What is the time difference between Sydney and Phoenix?

Phoenix is 17 hours behind Sydney. That figure is current — it changes by an hour when either city starts or ends daylight saving, and the exact dates are listed above.

When is the best time to call Phoenix from Sydney?

Between 10:00–11:00 in Sydney, which is 17:00–18:00 in Phoenix. That is the only stretch where both cities are inside a 09:00–18:00 day.

Does Sydney observe daylight saving time?

Yes. Sydney runs on UTC+10 in winter and UTC+11 in summer. The next change is on 2026-10-04, when clocks go forward by 60 minutes.

Does Phoenix observe daylight saving time?

No. Phoenix stays on UTC-7 all year, so its clocks never move.

If it is midday in Sydney, what time is it in Phoenix?

It is 19:00 in Phoenix, still on the previous day. That holds for the current offsets; it shifts by an hour around the daylight saving dates listed above.

Which time zones do Sydney and Phoenix use?

Sydney uses Australia/Sydney, currently UTC+10 (AEST), and Phoenix uses America/Phoenix, currently UTC-7 (MST). Those identifiers are the ones to use in code — abbreviations are ambiguous and offsets change.

Convert Sydney time to Phoenix time

Phoenix is 17 hours behind Sydney right now, so midday in Sydney lands in the evening in Phoenix.

Convert a time

From

Date

Time

Converted time

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The converter needs JavaScript to run. Everything below — offsets, daylight saving dates and the hour-by-hour table — is part of the page and works without it.

Hour by hour

Every hour of a day in Sydney, and what the clock reads in Phoenix at that same moment.

Sydney	Phoenix
00:00	07:00previous day
01:00	08:00previous day
02:00	09:00previous day
03:00	10:00previous day
04:00	11:00previous day
05:00	12:00previous day
06:00	13:00previous day
07:00	14:00previous day
08:00	15:00previous day
09:00	16:00previous day
10:00	17:00previous day
11:00	18:00previous day
12:00	19:00previous day
13:00	20:00previous day
14:00	21:00previous day
15:00	22:00previous day
16:00	23:00previous day
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

Daylight saving time

Sydney changes its clocks; Phoenix does not. The difference between them therefore shifts by an hour twice a year.

Sydney

Observes daylight saving time

Standard: UTC+10
Daylight: UTC+11
Next change: 2026-10-04 +60m

Phoenix

Does not observe daylight saving time

Standard: UTC-7

When you can actually talk

The window is 1 hour wide — 10:00–11:00 in Sydney, 17:00–18:00 in Phoenix.

Sydney 10:00–11:00Phoenix 17:00–18:00
Sydney 09:00–10:00Phoenix 16:00–17:00

Reference

The zone identifiers and offsets behind everything above.

	Sydney	Phoenix
IANA zone	Australia/Sydney	America/Phoenix
Abbreviation	AEST	MST
Standard offset	UTC+10	UTC-7
Daylight offset	UTC+11	—
Clock changes this year	2	0
Country	Australia	United States

Example, not the current time. Live times appear once the page loads.

Common questions

What is the time difference between Sydney and Phoenix?: Phoenix is 17 hours behind Sydney. That figure is current — it changes by an hour when either city starts or ends daylight saving, and the exact dates are listed above.
When is the best time to call Phoenix from Sydney?: Between 10:00–11:00 in Sydney, which is 17:00–18:00 in Phoenix. That is the only stretch where both cities are inside a 09:00–18:00 day.
Does Sydney observe daylight saving time?: Yes. Sydney runs on UTC+10 in winter and UTC+11 in summer. The next change is on 2026-10-04, when clocks go forward by 60 minutes.
Does Phoenix observe daylight saving time?: No. Phoenix stays on UTC-7 all year, so its clocks never move.
If it is midday in Sydney, what time is it in Phoenix?: It is 19:00 in Phoenix, still on the previous day. That holds for the current offsets; it shifts by an hour around the daylight saving dates listed above.
Which time zones do Sydney and Phoenix use?: Sydney uses Australia/Sydney, currently UTC+10 (AEST), and Phoenix uses America/Phoenix, currently UTC-7 (MST). Those identifiers are the ones to use in code — abbreviations are ambiguous and offsets change.