San Francisco and Santiago working-hours overlap
On Monday, 28 September 2026, San Francisco is 4 hours behind Santiago — UTC-07:00 against UTC-03:00. Their working hours overlap for 4 hours that day, between 16:00–20:00 UTC — 09:00–13:00 in San Francisco and 13:00–17:00 in Santiago. San Francisco changes clocks on Sunday, 1 November 2026, and the gap between them goes from 4 hours to 5 hours. Santiago changes clocks on Sunday, 4 April 2027, and the gap between them goes from 4 hours to 3 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
Everyone is at work between 16:00–20:00 UTC — 4 hours.
| City | Local time | Offset |
|---|---|---|
| San Francisco | 09:00–13:00 | UTC-07:00 |
| Santiago | 13:00–17:00 | UTC-03:00 |
Each city's working day
| City | Local hours | In UTC | Offset | Next clock change |
|---|---|---|---|---|
| San Francisco | 09:00–17:00 | 16:00–00:00 UTC | UTC-07:00 | UTC-07:00 → UTC-08:00, 1 Nov 2026 |
| Santiago | 09:00–17:00 | 12:00–20:00 UTC | UTC-03:00 | UTC-03:00 → UTC-04:00, 4 Apr 2027 |
How the shared window moves through the year
San Francisco and Santiago change clocks on different dates, so the gap between them moves twice a year. Each row is the same pair of working days, sampled once a month, so the window's size and position follow the clock changes described above.
| Month | Shared window | Length |
|---|---|---|
| 2026-10 | 16:00–20:00 UTC | 4 hours |
| 2026-11 | 17:00–20:00 UTC | 3 hours |
| 2026-12 | 17:00–20:00 UTC | 3 hours |
| 2027-01 | 17:00–20:00 UTC | 3 hours |
| 2027-02 | 17:00–20:00 UTC | 3 hours |
| 2027-03 | 16:00–20:00 UTC | 4 hours |
| 2027-04 | 16:00–21:00 UTC | 5 hours |
| 2027-05 | 16:00–21:00 UTC | 5 hours |
| 2027-06 | 16:00–21:00 UTC | 5 hours |
| 2027-07 | 16:00–21:00 UTC | 5 hours |
| 2027-08 | 16:00–21:00 UTC | 5 hours |
| 2027-09 | 16:00–20:00 UTC | 4 hours |
Questions
- What time can San Francisco and Santiago meet?
- 16:00–20:00 UTC on Monday, 28 September 2026 — 4 hours. In San Francisco that is 09:00–13:00, and in Santiago it is 13:00–17:00.
- How far apart are San Francisco and Santiago?
- On Monday, 28 September 2026, San Francisco is 4 hours behind Santiago — UTC-07:00 against UTC-03:00. San Francisco changes clocks on Sunday, 1 November 2026, and the gap between them goes from 4 hours to 5 hours. Santiago changes clocks on Sunday, 4 April 2027, and the gap between them goes from 4 hours to 3 hours.
- Does the overlap between San Francisco and Santiago change through the year?
- San Francisco and Santiago change clocks on different dates, so the gap between them moves twice a year. Sampled once a month across the twelve months from Monday, 28 September 2026 the window is 16:00–20:00 UTC, 17:00–20:00 UTC, 16:00–21:00 UTC.
Related city pairs
- Honolulu and San Francisco
- Honolulu and Santiago
- San Francisco and Denver
- San Francisco and Phoenix
- San Francisco and Mexico City
- San Francisco and Chicago
Or read how overlap is calculated and the other questions people ask about scheduling across time zones.