Chicago and Auckland working-hours overlap
On Monday, 28 September 2026, Chicago is 18 hours behind Auckland — UTC-05:00 against UTC+13:00. They share no working hours that day at all: Chicago works 14:00–22:00 UTC and Auckland works 20:00–04:00 UTC, and those two windows do not meet. Chicago changes clocks on Sunday, 1 November 2026, and the gap between them goes from 18 hours to 19 hours. Auckland changes clocks on Sunday, 4 April 2027, and the gap between them goes from 18 hours to 17 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 |
|---|---|---|---|---|
| Chicago | 09:00–17:00 | 14:00–22:00 UTC | UTC-05:00 | UTC-05:00 → UTC-06:00, 1 Nov 2026 |
| 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?
Chicago and Auckland change clocks on different dates, so the gap between them moves twice a year. 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 Chicago and Auckland are both at work?
- Not on Monday, 28 September 2026. Chicago works 14:00–22:00 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 Chicago and Auckland?
- On Monday, 28 September 2026, Chicago is 18 hours behind Auckland — UTC-05:00 against UTC+13:00. Chicago changes clocks on Sunday, 1 November 2026, and the gap between them goes from 18 hours to 19 hours. Auckland changes clocks on Sunday, 4 April 2027, and the gap between them goes from 18 hours to 17 hours.
- Does the overlap between Chicago and Auckland change through the year?
- There is no month in the twelve months from Monday, 28 September 2026 when Chicago and Auckland are both inside their working hours. Chicago changes clocks on Sunday, 1 November 2026, and the gap between them goes from 18 hours to 19 hours. Auckland changes clocks on Sunday, 4 April 2027, and the gap between them goes from 18 hours to 17 hours.
Related city pairs
- Honolulu and Chicago
- Honolulu and Auckland
- San Francisco and Chicago
- San Francisco and Auckland
- Denver and Chicago
- Denver and Auckland
Or read how overlap is calculated and the other questions people ask about scheduling across time zones.