Phoenix and Sydney working-hours overlap
On Monday, 28 September 2026, Phoenix is 17 hours behind Sydney — UTC-07:00 against UTC+10:00. They share no working hours that day at all: Phoenix works 16:00–00:00 UTC and Sydney works 23:00–07:00 UTC, and those two windows do not meet. Phoenix does not change clocks at all. Sydney changes clocks on Sunday, 4 October 2026, and the gap between them goes from 17 hours to 18 hours.
Every figure on this page describes Monday, 28 September 2026 — a fixed day, not the day you are reading it. Working hours are 09:00–17:00 local time for both cities; change either, or pick another date, in the overlap calculator.
Shared working hours
No shared working hours on this date.
On this date the two working days do not meet, and none of the twelve months sampled for the year brings them together. Widening one side’s hours is what would change it; no other date will find a window that is not there.
Each city's working day
| City | Local hours | In UTC | Offset | Next clock change |
|---|---|---|---|---|
| Phoenix | 09:00–17:00 | 16:00–00:00 UTC | UTC-07:00 | No daylight saving |
| Sydney | 09:00–17:00 | 23:00–07:00 UTC | UTC+10:00 | UTC+10:00 → UTC+11:00, 4 Oct 2026 |
Is there any overlap through the year?
Sydney changes clocks on Sunday, 4 October 2026, and Phoenix never does, so the gap between them moves only when Sydney's clocks do. In the twelve months sampled the two working days never meet, so there is no window to move.
| Month | Shared window | Length |
|---|---|---|
| 2026-10 | No shared hours | — |
| 2026-11 | No shared hours | — |
| 2026-12 | No shared hours | — |
| 2027-01 | No shared hours | — |
| 2027-02 | No shared hours | — |
| 2027-03 | No shared hours | — |
| 2027-04 | No shared hours | — |
| 2027-05 | No shared hours | — |
| 2027-06 | No shared hours | — |
| 2027-07 | No shared hours | — |
| 2027-08 | No shared hours | — |
| 2027-09 | No shared hours | — |
Questions
- Is there any time Phoenix and Sydney are both at work?
- Not on Monday, 28 September 2026. Phoenix works 16:00–00:00 UTC and Sydney works 23:00–07:00 UTC, and those windows do not overlap. Widening one side's hours or choosing another date is what changes that.
- How far apart are Phoenix and Sydney?
- On Monday, 28 September 2026, Phoenix is 17 hours behind Sydney — UTC-07:00 against UTC+10:00. Phoenix does not change clocks at all. Sydney changes clocks on Sunday, 4 October 2026, and the gap between them goes from 17 hours to 18 hours.
- Does the overlap between Phoenix and Sydney change through the year?
- There is no month in the twelve months from Monday, 28 September 2026 when Phoenix and Sydney are both inside their working hours. Phoenix does not change clocks at all. Sydney changes clocks on Sunday, 4 October 2026, and the gap between them goes from 17 hours to 18 hours.
Related city pairs
- Honolulu and Phoenix
- Honolulu and Sydney
- San Francisco and Phoenix
- San Francisco and Sydney
- Denver and Phoenix
- Denver and Sydney
Or read how overlap is calculated and the other questions people ask about scheduling across time zones.