Denver and Singapore working-hours overlap
On Monday, 28 September 2026, Denver is 14 hours behind Singapore — UTC-06:00 against UTC+08:00. They share no working hours that day at all: Denver works 15:00–23:00 UTC and Singapore works 01:00–09:00 UTC, and those two windows do not meet. Denver changes clocks on Sunday, 1 November 2026, and the gap between them goes from 14 hours to 15 hours. Singapore does not change clocks at all.
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 |
|---|---|---|---|---|
| Denver | 09:00–17:00 | 15:00–23:00 UTC | UTC-06:00 | UTC-06:00 → UTC-07:00, 1 Nov 2026 |
| Singapore | 09:00–17:00 | 01:00–09:00 UTC | UTC+08:00 | No daylight saving |
Is there any overlap through the year?
Denver changes clocks on Sunday, 1 November 2026, and Singapore never does, so the gap between them moves only when Denver'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 Denver and Singapore are both at work?
- Not on Monday, 28 September 2026. Denver works 15:00–23:00 UTC and Singapore works 01:00–09:00 UTC, and those windows do not overlap. Widening one side's hours or choosing another date is what changes that.
- How far apart are Denver and Singapore?
- On Monday, 28 September 2026, Denver is 14 hours behind Singapore — UTC-06:00 against UTC+08:00. Denver changes clocks on Sunday, 1 November 2026, and the gap between them goes from 14 hours to 15 hours. Singapore does not change clocks at all.
- Does the overlap between Denver and Singapore change through the year?
- There is no month in the twelve months from Monday, 28 September 2026 when Denver and Singapore are both inside their working hours. Denver changes clocks on Sunday, 1 November 2026, and the gap between them goes from 14 hours to 15 hours. Singapore does not change clocks at all.
Related city pairs
- Honolulu and Denver
- Honolulu and Singapore
- San Francisco and Denver
- San Francisco and Singapore
- Denver and Phoenix
- Denver and Mexico City
Or read how overlap is calculated and the other questions people ask about scheduling across time zones.