Istanbul and Auckland working-hours overlap
On Monday, 28 September 2026, Istanbul is 10 hours behind Auckland — UTC+03:00 against UTC+13:00. They share no working hours that day at all: Istanbul works 06:00–14:00 UTC and Auckland works 20:00–04:00 UTC, and those two windows do not meet. Istanbul does not change clocks at all. Auckland changes clocks on Sunday, 4 April 2027, and the gap between them goes from 10 hours to 9 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 |
|---|---|---|---|---|
| Istanbul | 09:00–17:00 | 06:00–14:00 UTC | UTC+03:00 | No daylight saving |
| Auckland | 09:00–17:00 | 20:00–04:00 UTC | UTC+13:00 | UTC+13:00 → UTC+12:00, 4 Apr 2027 |
Is there any overlap through the year?
Auckland changes clocks on Sunday, 4 April 2027, and Istanbul never does, so the gap between them moves only when Auckland'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 Istanbul and Auckland are both at work?
- Not on Monday, 28 September 2026. Istanbul works 06:00–14:00 UTC and Auckland works 20:00–04:00 UTC, and those windows do not overlap. Widening one side's hours or choosing another date is what changes that.
- How far apart are Istanbul and Auckland?
- On Monday, 28 September 2026, Istanbul is 10 hours behind Auckland — UTC+03:00 against UTC+13:00. Istanbul does not change clocks at all. Auckland changes clocks on Sunday, 4 April 2027, and the gap between them goes from 10 hours to 9 hours.
- Does the overlap between Istanbul and Auckland change through the year?
- There is no month in the twelve months from Monday, 28 September 2026 when Istanbul and Auckland are both inside their working hours. Istanbul does not change clocks at all. Auckland changes clocks on Sunday, 4 April 2027, and the gap between them goes from 10 hours to 9 hours.
Related city pairs
- Honolulu and Istanbul
- Honolulu and Auckland
- San Francisco and Istanbul
- San Francisco and Auckland
- Denver and Istanbul
- Denver and Auckland
Or read how overlap is calculated and the other questions people ask about scheduling across time zones.