Time Difference Between Australia and Arizona Time
As of 12 October 2026, Arizona Time is 18 hours behind Australia. That number is not constant. Over the course of a year, because of daylight saving changes, Arizona Time, United States ranges from 18 hours behind to 17 hours behind relative to Sydney, Australia. The calculator below is always up to date.
Comparing other zones inside the country? See all seven US time zones side by side.
Tap either box to search any country or city.
Sydney, Australia
23:45
Mon, Oct 12, 2026
UTC+11 · Australia/Sydney
Arizona Time, United States
-18h
05:45
Mon, Oct 12, 2026
UTC-7 · MST · America/Phoenix
Arizona Time is 18 hours behind Australia.
Time zone details
| Place | Local date | Time zone | UTC offset | Summer time |
|---|---|---|---|---|
| Australia | Monday, October 12, 2026 | Australia/Sydney | UTC+11 | Active now |
| Arizona Time | Monday, October 12, 2026 | MSTAmerica/Phoenix | UTC-7 | Not observed |
Australia: Australia has several time zones and only some states use daylight saving. This page uses Eastern Time (Sydney, Melbourne); Perth is 2 to 3 hours behind.
Arizona Time: Most of Arizona does not observe daylight saving time, so it stays at UTC-7 all year — the same clock as Mountain Standard Time in winter, but 1 hour behind Mountain Time in summer. The Navajo Nation in Arizona is the exception and does observe it.
Hour by hour: Australia to Arizona Time
Every hour of today in Australia and what it is in Arizona Time. Highlighted rows fall inside Arizona Time working hours (09:00–18:00).
| Australia | Arizona Time |
|---|---|
| 00:00 | 06:00prev day |
| 01:00 | 07:00prev day |
| 02:00 | 08:00prev day |
| 03:00 | 09:00prev day |
| 04:00 | 10:00prev day |
| 05:00 | 11:00prev day |
| 06:00 | 12:00prev day |
| 07:00 | 13:00prev day |
| 08:00 | 14:00prev day |
| 09:00 | 15:00prev day |
| 10:00 | 16:00prev day |
| 11:00 | 17:00prev day |
| Australia | Arizona Time |
|---|---|
| 12:00 | 18:00prev day |
| 13:00 | 19:00prev day |
| 14:00 | 20:00prev day |
| 15:00 | 21:00prev day |
| 16:00 | 22:00prev day |
| 17:00 | 23:00prev day |
| 18:00 | 00:00 |
| 19:00 | 01:00 |
| 20:00 | 02:00 |
| 21:00 | 03:00 |
| 22:00 | 04:00 |
| 23:00 | 05:00 |
Best time to call or meet
Overlapping working hours
09:00–12:00 in Australia (15:00–18:00 in Arizona Time)
Both places are inside 09:00–18:00 for 3 hours a day. Anything in this window works without asking anyone to stay late.
Reasonable calling hours
08:00–15:00 in Australia (14:00–21:00 in Arizona Time)
Both people are awake and available between 08:00 and 21:00 local time during this window.
When this difference changes
Australia puts its clocks back on Sunday, April 4, 2027
The local offset moves from UTC+11 to UTC+10. After that date, Arizona Time is 17 hours behind Australia — instead of 18 hours behind, as it is today.
Planning something with more than two places?
Adding a third city usually kills the obvious answer. The Meeting Time Finder takes up to five cities at once and shows only the hours that work for everybody.
Australia and Arizona Time: common questions
What is the time difference between Australia and Arizona Time?
As of 12 October 2026, Arizona Time is 18 hours behind Australia. The gap is not fixed: across the year, Arizona Time ranges from 18 hours behind to 17 hours behind relative to Australia, as clocks change. The calculator on this page always shows the difference for right now.
When it is 9:00 AM in Australia, what time is it in Arizona Time?
It is 03:00 PM in Arizona Time, United States. Use the time field in the calculator above to check any other hour.
Is Arizona Time ahead of or behind Australia?
Arizona Time is behind Australia by 18 hours at the moment. In practical terms, the working day in Arizona Time starts and ends later in Australia terms.
Do Australia and Arizona Time observe daylight saving time?
Australia changes its clocks twice a year; Arizona Time does not. The difference therefore shifts by an hour when Australia switches: across the year, Arizona Time ranges from 18 hours behind to 17 hours behind relative to Australia.
What is the best time to call Arizona Time from Australia?
Working hours overlap between 09:00 and 12:00 Australia time, which is 15:00 to 18:00 in Arizona Time. Calls inside that window reach both sides during the normal working day.
Related comparisons
Local dates shown for Sydney, Australia (UTC+11) and Arizona Time, United States (UTC-7) were generated on Monday, October 12, 2026 UTC and refresh in your browser.