Zacatecas · Mexico · 23.17° N · 102.87° W
Solar position in Fresnillo
Sun position, daylight and the best solar panel angle for Fresnillo — computed for 23.17° N, 102.87° W, 2192 m above sea level.
The sun right now
Sun in Fresnillo today
Saturday, 24 October 2026 · local time UTC−6
| Event | Time | Direction / height |
|---|---|---|
| Astronomical dawn | 05:36 | sun 18° below horizon |
| Nautical dawn | 06:03 | 12° below |
| Civil dawn | 06:29 | 6° below |
| Sunrise | 06:52 | 103° ESE |
| Golden hour ends | 07:23 | sun 6° up |
| Solar noon | 12:35 | 54.9° high |
| Golden hour starts | 17:47 | sun 6° up |
| Sunset | 18:18 | 257° WSW |
| Civil dusk | 18:41 | 6° below |
| Nautical dusk | 19:07 | 12° below |
| Astronomical dusk | 19:34 | 18° below |
| Day length | 11 h 26 min | |
Sun path diagram for Fresnillo
Where the sun stands in the sky: the centre is straight overhead, the outer ring is the horizon. Numbers mark local clock hours.
- June solstice
- Equinox
- December solstice
- Today
On the June solstice the sun reaches 89.7° at solar noon in Fresnillo; on the December solstice only 43.4°. Sunrise swings from 64° ENE in June to 115° ESE in December — a 51° arc along the horizon.
Sunrise, sunset and sun height by month
Values for the 21st of each month, local clock time including daylight saving time.
| Month | Sunrise | Solar noon | Sunset | Day length | Noon elevation |
|---|---|---|---|---|---|
| January | 07:34 | 13:02 | 18:31 | 10 h 57 min | 47.1° |
| February | 07:19 | 13:05 | 18:50 | 11 h 31 min | 56.5° |
| March | 06:54 | 12:58 | 19:03 | 12 h 09 min | 67.3° |
| April | 06:25 | 12:50 | 19:14 | 12 h 49 min | 78.9° |
| May | 06:07 | 12:48 | 19:28 | 13 h 21 min | 87.1° |
| June | 06:06 | 12:53 | 19:40 | 13 h 34 min | 89.7° |
| July | 06:17 | 12:57 | 19:38 | 13 h 21 min | 87.2° |
| August | 06:30 | 12:54 | 19:18 | 12 h 49 min | 78.7° |
| September | 06:39 | 12:44 | 18:48 | 12 h 09 min | 67.3° |
| October | 06:51 | 12:35 | 18:20 | 11 h 29 min | 55.9° |
| November | 07:09 | 12:37 | 18:05 | 10 h 56 min | 46.8° |
| December | 07:28 | 12:49 | 18:11 | 10 h 43 min | 43.4° |
A year of daylight in Fresnillo
Each column is one day of 2026. Bright: sun above the horizon; soft: civil twilight; line: solar noon. Steps are daylight saving time changes.
Best solar panel angle in Fresnillo
Fixed array facing south (azimuth 180°). Energy per kWp from NASA POWER monthly climate, including clouds, temperature and snow reflection.
24°collects the most energy over a year: 1945 kWh per kWp.
19°gives the most in the darkest month — the one an off-grid system is sized for.
- Yearly energy
- Worst-month energy
| Tilt | kWh/kWp per year | Share of best year | July kWh/kWp/day | Best ÷ worst month |
|---|---|---|---|---|
| 0° | 1802 | 93% | 5.29 | 1.7× |
| 15° | 1926 | 99% | 5.02 | 1.3× |
| 19° off-grid best | 1940 | 100% | 4.90 | 1.3× |
| 23° = latitude | 1945 | 100% | 4.77 | 1.3× |
| 24° year-round best | 1945 | 100% | 4.73 | 1.3× |
| 30° | 1934 | 99% | 4.48 | 1.4× |
| 45° | 1827 | 94% | 3.70 | 1.6× |
| 60° | 1615 | 83% | 2.77 | 2.2× |
| 70° | 1423 | 73% | 2.10 | 2.8× |
| 90° | 981 | 50% | 1.10 | 4.8× |
A fixed array in Fresnillo produces the most over a year at 24°. The design month for an off-grid system is July: at 19° it makes 4.90 kWh per kWp a day, 4% more than at 24°, and costs 0% of the yearly total. Why steep panels win winter.
Off-grid solar in Fresnillo at 70°
Daily energy of 1 kWp by month. Bars: panels at 70°. Line: panels at 24° (year-round best).
| Month | Sun hours, flat | Sun hours at 70° | kWh/kWp/day at 70° | at 24° | Mean temp. |
|---|---|---|---|---|---|
| January | 4.65 | 6.31 | 5.47 | 5.25 | 11.0 °C |
| February | 5.65 | 6.19 | 5.33 | 5.80 | 13.0 °C |
| March | 6.74 | 5.45 | 4.64 | 6.16 | 15.5 °C |
| April | 7.40 | 4.01 | 3.36 | 5.95 | 18.8 °C |
| May | 7.47 | 2.86 | 2.36 | 5.45 | 21.3 °C |
| June | 6.91 | 2.39 | 1.95 | 4.88 | 21.7 °C |
| July | 6.49 | 2.56 | 2.10 | 4.73 | 20.1 °C |
| August | 6.43 | 3.20 | 2.65 | 4.99 | 20.0 °C |
| September | 5.62 | 3.94 | 3.31 | 4.79 | 18.6 °C |
| October | 5.57 | 5.46 | 4.63 | 5.40 | 16.9 °C |
| November | 4.96 | 6.46 | 5.54 | 5.45 | 13.6 °C |
| December | 4.43 | 6.42 | 5.55 | 5.14 | 11.5 °C |
| Year | 6.03 avg | 4.60 avg | 1423 kWh | 1945 kWh |
Sizing example. To run a 1 kWh-per-day load through June on LiFePO4 batteries (charge controller, battery and inverter losses included) you need about 600 Wp of panels at 70°, versus 250 Wp at 24°. Here the lower tilt is the better winter choice — the sun stays high enough. Size your own system.
Row spacing in Fresnillo
Distance between rows of 2 m long panels (slope length) so that no row shades the next between 10:00 and 14:00 solar time on the winter solstice.
2.9 mrow pitch at 70°
2.8 mrow pitch at 24°
How Fresnillo compares in Mexico
Against the other 624 places in Mexico with climate data, for a fixed array at its best angle.
14thof 625 places in Mexico for sunshine, shared: 6.03 peak sun hours a day on flat ground.
+11%solar energy a year compared with the average place in Mexico: 1,945 against 1,754 kWh per kWp.
+15 mindaylight on the longest day, compared with Mexico City: 13 h 34 min against 13 h 18 min.
24°best year-round tilt here; across Mexico it runs from 15° in Coatzacoalcos to 30° in Tijuana.
Of the 625 places in Mexico, Ciudad Constitución gets the most sun (6.12 peak sun hours a day) and Poza Rica de Hidalgo and one other place the least (4.59); Fresnillo ranks joint 14th. In its darkest month, June, 1 kWp of off-grid panels at 70° makes 1.95 kWh a day here, against 1.82 kWh on average in Mexico. The shortest day lasts 10 h 43 min, −15 min compared with Mexico City.
Solar forecast for Fresnillo, next 48 hours
Expected output of 1 kWp at 70°, computed from the ICON-EU weather model of the Deutscher Wetterdienst (DWD), Europe.
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Questions about the sun in Fresnillo
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A free, live card for Fresnillo: where the sun is right now on today's path, a countdown to sunset or sunrise, the daylight change, the moon phase at night and the best panel angle.
Sun positions: NREL Solar Position Algorithm. Climate: NASA POWER monthly climatology (NASA Langley Research Center). Forecast: Deutscher Wetterdienst, ICON-EU (CC BY 4.0), processed. Places: GeoNames (CC BY 4.0). Time zones: IANA. Sources and licences.