| Sunrise | Sunset | Daylight | |
|---|---|---|---|
| Today | 06:41 | 18:58 | 12h 17m |
| Tomorrow | 06:40 | 18:59 | 12h 19m |
| Change | −1m | +1m | +2m |
Positive change in sunset / daylight = days are getting longer. Negative change in sunrise = sun is rising earlier.
Today's light segments for San Luis Potosí. Amber = daylight, violet = twilight, dark = night.
Sunrise and sunset on the 1st of each month in San Luis Potosí.
| Month | Sunrise | Sunset | Daylight |
|---|---|---|---|
| January | 07:24 | 18:12 | 10h 48m |
| February | 07:24 | 18:33 | 11h 09m |
| March | 07:07 | 18:48 | 11h 41m |
| April | 06:38 | 18:59 | 12h 21m |
| May | 06:13 | 19:10 | 12h 57m |
| June | 06:01 | 19:24 | 13h 23m |
| July | 06:04 | 19:32 | 13h 28m |
| August | 06:16 | 19:26 | 13h 10m |
| September | 06:28 | 19:03 | 12h 35m |
| October | 06:36 | 18:34 | 11h 58m |
| November | 06:48 | 18:08 | 11h 20m |
| December | 07:07 | 18:00 | 10h 53m |
San Luis Potosí is located at 22.15°N, 100.98°W. Its latitude determines how dramatically daylight hours change through the year.
The city uses the America/Mexico_City timezone (CST). It does not observe Daylight Saving Time, so solar times shift gradually through the year without abrupt clock changes.
Solar noon — the moment the sun reaches its highest point in the sky — occurs when the sun crosses the local meridian. In San Luis Potosí this falls around 12:43 in mid-summer and 12:34 in December, reflecting UTC offset and any DST adjustments.