South San Francisco
Sunrise and sunset in South San Francisco
Today’s sunrise, sunset and twilight in South San Francisco, in local time. At 37.7° N, the day lasts from 9 h 34 min at the winter solstice to 14 h 46 min at the summer solstice.
Today · worked out at
Thursday, October 22: sunrise at 07:24, sunset at 18:22.
Day length 10 h 58 min, 2 min 16 s shorter than yesterday.
Solar noon at 12:54, with the Sun 41° above the horizon.
Times are South San Francisco time (PDT).
Twilight and golden hour today
| Today | Morning | Evening |
|---|---|---|
| Astronomical twilight | 05:57 | 19:50 |
| Nautical twilight | 06:27 | 19:19 |
| Civil twilight | 06:58 | 18:49 |
| Sunrise and sunset | 07:24 | 18:22 |
| Golden hour | 07:24–08:00 | 17:46–18:22 |
Each twilight begins at the morning time and ends at the evening one.
The year in South San Francisco
- Longest day: June 21, 14 h 46 min, from sunrise at 05:48 to sunset at 20:34.
- Shortest day: December 21, 9 h 34 min, from sunrise at 07:21 to sunset at 16:54.
Sunrise and sunset on the 21st of each month, 2026
| Date | Sunrise | Sunset | Day length |
|---|---|---|---|
| January 21 | 07:20 | 17:21 | 10 h 01 min |
| February 21 | 06:51 | 17:55 | 11 h 04 min |
| March 21 | 07:11 | 19:22 | 12 h 11 min |
| April 21 | 06:26 | 19:50 | 13 h 25 min |
| May 21 | 05:55 | 20:17 | 14 h 22 min |
| June 21 | 05:48 | 20:34 | 14 h 46 min |
| July 21 | 06:04 | 20:27 | 14 h 22 min |
| August 21 | 06:30 | 19:54 | 13 h 23 min |
| September 21 | 06:56 | 19:07 | 12 h 11 min |
| October 21 | 07:23 | 18:23 | 11 h 00 min |
| November 21 | 06:56 | 16:54 | 9 h 59 min |
| December 21 | 07:21 | 16:54 | 9 h 34 min |
Good to know
- Sunrise and sunset are when the top of the Sun meets a level horizon, allowing for the usual bending of light by the air. Hills, buildings and height shift what you see by a few minutes.
- Civil, nautical and astronomical twilight end when the Sun is 6°, 12° and 18° below the horizon. Golden hour here is the photographers’ usual definition: the Sun less than 6° above it.
- Worked out when the page loads from NOAA’s solar equations, for 37.7° N, 122.4° W, and accurate to about a minute.
How the layers work, where their data comes from and what they can’t tell you: Day and night, live, The Sun, Moon and planets
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