Guidimaka · Mauritania · 15.16° N · 12.18° W
Solar position in Sélibaby
Sun position, daylight and the best solar panel angle for Sélibaby — computed for 15.16° N, 12.18° W, 64 m above sea level.
The sun right now
Sun in Sélibaby today
Saturday, 24 October 2026 · local time UTC
| Event | Time | Direction / height |
|---|---|---|
| Astronomical dawn | 05:30 | sun 18° below horizon |
| Nautical dawn | 05:55 | 12° below |
| Civil dawn | 06:20 | 6° below |
| Sunrise | 06:42 | 102° ESE |
| Golden hour ends | 07:11 | sun 6° up |
| Solar noon | 12:32 | 63.0° high |
| Golden hour starts | 17:54 | sun 6° up |
| Sunset | 18:23 | 258° WSW |
| Civil dusk | 18:45 | 6° below |
| Nautical dusk | 19:10 | 12° below |
| Astronomical dusk | 19:35 | 18° below |
| Day length | 11 h 41 min | |
Sun path diagram for Sélibaby
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 81.7° at solar noon in Sélibaby; on the December solstice only 51.4°. Sunrise swings from 65° ENE in June to 114° ESE in December — a 49° 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 | 07:18 | 13:00 | 18:41 | 11 h 23 min | 55.0° |
| February | 07:10 | 13:02 | 18:54 | 11 h 44 min | 64.4° |
| March | 06:52 | 12:55 | 18:59 | 12 h 08 min | 75.2° |
| April | 06:30 | 12:47 | 19:04 | 12 h 33 min | 86.8° |
| May | 06:18 | 12:45 | 19:12 | 12 h 53 min | 84.9° |
| June | 06:19 | 12:50 | 19:21 | 13 h 02 min | 81.7° |
| July | 06:28 | 12:55 | 19:21 | 12 h 54 min | 84.8° |
| August | 06:35 | 12:51 | 19:08 | 12 h 33 min | 86.8° |
| September | 06:37 | 12:41 | 18:45 | 12 h 08 min | 75.4° |
| October | 06:41 | 12:33 | 18:24 | 11 h 43 min | 64.0° |
| November | 06:53 | 12:34 | 18:15 | 11 h 22 min | 54.9° |
| December | 07:09 | 12:46 | 18:23 | 11 h 14 min | 51.4° |
A year of daylight in Sélibaby
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 Sélibaby
Fixed array facing south (azimuth 180°). Energy per kWp from NASA POWER monthly climate, including clouds, temperature and snow reflection.
15°collects the most energy over a year: 1777 kWh per kWp.
10°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 | August kWh/kWp/day | Best ÷ worst month |
|---|---|---|---|---|
| 0° | 1726 | 97% | 4.57 | 1.4× |
| 10° off-grid best | 1771 | 100% | 4.49 | 1.2× |
| 15° year-round best = latitude | 1777 | 100% | 4.41 | 1.2× |
| 30° | 1729 | 97% | 4.02 | 1.4× |
| 45° | 1586 | 89% | 3.41 | 1.6× |
| 60° | 1357 | 76% | 2.63 | 2.1× |
| 70° | 1169 | 66% | 2.05 | 2.7× |
| 90° | 796 | 45% | 1.10 | 3.4× |
A fixed array in Sélibaby produces the most over a year at 15°. The design month for an off-grid system is August: at 10° it makes 4.49 kWh per kWp a day, 2% more than at 15°, and costs 0% of the yearly total. Why steep panels win winter.
Off-grid solar in Sélibaby at 70°
Daily energy of 1 kWp by month. Bars: panels at 70°. Line: panels at 15° (year-round best).
| Month | Sun hours, flat | Sun hours at 70° | kWh/kWp/day at 70° | at 15° | Mean temp. |
|---|---|---|---|---|---|
| January | 5.29 | 5.61 | 4.62 | 4.83 | 23.9 °C |
| February | 5.94 | 5.19 | 4.22 | 5.12 | 27.0 °C |
| March | 6.71 | 4.56 | 3.65 | 5.43 | 30.4 °C |
| April | 7.10 | 3.44 | 2.71 | 5.37 | 33.7 °C |
| May | 6.93 | 2.57 | 1.98 | 5.00 | 35.5 °C |
| June | 6.48 | 2.26 | 1.75 | 4.64 | 33.8 °C |
| July | 6.09 | 2.21 | 1.74 | 4.47 | 30.0 °C |
| August | 5.78 | 2.57 | 2.05 | 4.41 | 28.2 °C |
| September | 5.90 | 3.55 | 2.86 | 4.71 | 28.1 °C |
| October | 5.82 | 4.64 | 3.75 | 4.90 | 28.3 °C |
| November | 5.41 | 5.47 | 4.46 | 4.84 | 26.4 °C |
| December | 5.08 | 5.71 | 4.69 | 4.71 | 24.1 °C |
| Year | 6.04 avg | 3.97 avg | 1169 kWh | 1777 kWh |
Sizing example. To run a 1 kWh-per-day load through July on LiFePO4 batteries (charge controller, battery and inverter losses included) you need about 680 Wp of panels at 70°, versus 270 Wp at 15°. Here the lower tilt is the better winter choice — the sun stays high enough. Size your own system.
Row spacing in Sélibaby
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.
2.4 mrow pitch at 70°
2.4 mrow pitch at 15°
How Sélibaby compares in Mauritania
Against the other 25 places in Mauritania with climate data, for a fixed array at its best angle.
25thof 26 places in Mauritania for sunshine: 6.04 peak sun hours a day on flat ground.
−4%solar energy a year compared with the average place in Mauritania: 1,777 against 1,845 kWh per kWp.
−11 mindaylight on the longest day, compared with Nouakchott: 13 h 02 min against 13 h 13 min.
15°best year-round tilt here; across Mauritania it runs from 15° in Sélibaby to 22° in Zouérat.
Of the 26 places in Mauritania, Boutilimitt and one other place get the most sun (6.37 peak sun hours a day) and El ’Ayoûn the least (6.03); Sélibaby ranks 25th. In its darkest month, July, 1 kWp of off-grid panels at 70° makes 1.74 kWh a day here, against 1.95 kWh on average in Mauritania. The shortest day lasts 11 h 14 min, +11 min compared with Nouakchott.
Solar forecast for Sélibaby, 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 Sélibaby
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A free, live card for Sélibaby: 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.