San Luis
Sunrise and sunset in San Luis
Today’s sunrise, sunset and twilight in San Luis, in local time. At 33.3° S, the day lasts from 9 h 57 min at the winter solstice to 14 h 22 min at the summer solstice.
Today · worked out at
Wednesday, October 21: sunrise at 06:37, sunset at 19:43.
Day length 13 h 06 min, 1 min 58 s longer than yesterday.
Solar noon at 13:09, with the Sun 68° above the horizon.
Times are San Luis time (GMT-3).
Twilight and golden hour today
| Today | Morning | Evening |
|---|---|---|
| Astronomical twilight | 05:09 | 21:10 |
| Nautical twilight | 05:41 | 20:39 |
| Civil twilight | 06:11 | 20:08 |
| Sunrise and sunset | 06:37 | 19:43 |
| Golden hour | 06:37–07:10 | 19:09–19:43 |
Each twilight begins at the morning time and ends at the evening one.
The year in San Luis
- Longest day: December 21, 14 h 22 min, from sunrise at 06:12 to sunset at 20:34.
- Shortest day: June 21, 9 h 57 min, from sunrise at 08:28 to sunset at 18:25.
Sunrise and sunset on the 21st of each month, 2026
| Date | Sunrise | Sunset | Day length |
|---|---|---|---|
| January 21 | 06:37 | 20:35 | 13 h 58 min |
| February 21 | 07:06 | 20:10 | 13 h 03 min |
| March 21 | 07:29 | 19:34 | 12 h 06 min |
| April 21 | 07:51 | 18:55 | 11 h 04 min |
| May 21 | 08:13 | 18:30 | 10 h 16 min |
| June 21 | 08:28 | 18:25 | 9 h 57 min |
| July 21 | 08:23 | 18:39 | 10 h 16 min |
| August 21 | 07:56 | 19:00 | 11 h 04 min |
| September 21 | 07:16 | 19:21 | 12 h 05 min |
| October 21 | 06:37 | 19:43 | 13 h 06 min |
| November 21 | 06:11 | 20:11 | 14 h 00 min |
| December 21 | 06:12 | 20:34 | 14 h 22 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 33.3° S, 66.3° 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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