Labé Region · Guinea · 11.80° N · 12.22° W
Solar position in Donghol-Sigon
Sun position, daylight and the best solar panel angle for Donghol-Sigon — computed for 11.80° N, 12.22° W, 940 m above sea level.
The sun right now
Sun in Donghol-Sigon today
Saturday, 24 October 2026 · local time UTC
| Event | Time | Direction / height |
|---|---|---|
| Astronomical dawn | 05:28 | sun 18° below horizon |
| Nautical dawn | 05:53 | 12° below |
| Civil dawn | 06:18 | 6° below |
| Sunrise | 06:39 | 102° ESE |
| Golden hour ends | 07:08 | sun 6° up |
| Solar noon | 12:32 | 66.3° high |
| Golden hour starts | 17:57 | sun 6° up |
| Sunset | 18:26 | 258° WSW |
| Civil dusk | 18:47 | 6° below |
| Nautical dusk | 19:12 | 12° below |
| Astronomical dusk | 19:37 | 18° below |
| Day length | 11 h 47 min | |
Sun path diagram for Donghol-Sigon
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 78.4° at solar noon in Donghol-Sigon; on the December solstice only 54.8°. Sunrise swings from 66° ENE in June to 114° ESE in December — a 48° 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 | 07:13 | 13:00 | 18:46 | 11 h 33 min | 58.4° |
| February | 07:07 | 13:02 | 18:57 | 11 h 49 min | 67.8° |
| March | 06:52 | 12:56 | 18:59 | 12 h 07 min | 78.6° |
| April | 06:34 | 12:47 | 19:01 | 12 h 27 min | 89.8° |
| May | 06:24 | 12:45 | 19:06 | 12 h 43 min | 81.5° |
| June | 06:26 | 12:50 | 19:15 | 12 h 49 min | 78.4° |
| July | 06:33 | 12:55 | 19:16 | 12 h 43 min | 81.4° |
| August | 06:38 | 12:52 | 19:05 | 12 h 27 min | 89.8° |
| September | 06:38 | 12:41 | 18:45 | 12 h 08 min | 78.8° |
| October | 06:39 | 12:33 | 18:27 | 11 h 49 min | 67.4° |
| November | 06:48 | 12:34 | 18:20 | 11 h 33 min | 58.2° |
| December | 07:03 | 12:46 | 18:29 | 11 h 26 min | 54.8° |
A year of daylight in Donghol-Sigon
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 Donghol-Sigon
Fixed array facing south (azimuth 180°). Energy per kWp from NASA POWER monthly climate, including clouds, temperature and snow reflection.
14°collects the most energy over a year: 1676 kWh per kWp.
0°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° off-grid best | 1639 | 98% | 4.02 | 1.3× |
| 12° = latitude | 1676 | 100% | 3.81 | 1.4× |
| 14° year-round best | 1676 | 100% | 3.77 | 1.4× |
| 15° | 1676 | 100% | 3.74 | 1.4× |
| 30° | 1621 | 97% | 3.28 | 1.6× |
| 45° | 1478 | 88% | 2.65 | 2.0× |
| 60° | 1259 | 75% | 1.94 | 2.7× |
| 70° | 1081 | 64% | 1.48 | 3.3× |
| 90° | 743 | 44% | 1.14 | 3.3× |
A fixed array in Donghol-Sigon produces the most over a year at 14°. The design month for an off-grid system is July: at 0° it makes 4.02 kWh per kWp a day, 7% more than at 14°, and costs 2% of the yearly total. Why steep panels win winter.
Off-grid solar in Donghol-Sigon at 70°
Daily energy of 1 kWp by month. Bars: panels at 70°. Line: panels at 14° (year-round best).
| Month | Sun hours, flat | Sun hours at 70° | kWh/kWp/day at 70° | at 14° | Mean temp. |
|---|---|---|---|---|---|
| January | 5.53 | 5.55 | 4.57 | 4.95 | 24.5 °C |
| February | 6.09 | 5.01 | 4.08 | 5.17 | 27.0 °C |
| March | 6.61 | 4.18 | 3.37 | 5.32 | 29.1 °C |
| April | 6.65 | 2.94 | 2.34 | 5.05 | 30.2 °C |
| May | 6.13 | 2.09 | 1.65 | 4.52 | 29.2 °C |
| June | 5.46 | 1.83 | 1.44 | 4.02 | 26.1 °C |
| July | 5.02 | 1.85 | 1.48 | 3.77 | 24.0 °C |
| August | 4.91 | 2.22 | 1.79 | 3.80 | 23.3 °C |
| September | 5.20 | 3.00 | 2.45 | 4.19 | 23.5 °C |
| October | 5.38 | 4.00 | 3.29 | 4.52 | 24.0 °C |
| November | 5.53 | 5.28 | 4.36 | 4.92 | 23.6 °C |
| December | 5.40 | 5.79 | 4.79 | 4.94 | 23.3 °C |
| Year | 5.66 avg | 3.64 avg | 1081 kWh | 1676 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 820 Wp of panels at 70°, versus 310 Wp at 14°. Here the lower tilt is the better winter choice — the sun stays high enough. Size your own system.
Row spacing in Donghol-Sigon
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.
2.2 mrow pitch at 70°
2.3 mrow pitch at 14°
How Donghol-Sigon compares in Guinea
Against the other 46 places in Guinea with climate data, for a fixed array at its best angle.
7thof 47 places in Guinea for sunshine: 5.66 peak sun hours a day on flat ground.
+5%solar energy a year compared with the average place in Guinea: 1,676 against 1,594 kWh per kWp.
+8 mindaylight on the longest day, compared with Conakry: 12 h 49 min against 12 h 41 min.
14°best year-round tilt here; across Guinea it runs from 10° in Nzérékoré to 14° in Kintinian.
Of the 47 places in Guinea, Kintinian gets the most sun (5.75 peak sun hours a day) and Nzérékoré the least (4.86); Donghol-Sigon ranks 7th. In its darkest month, June, 1 kWp of off-grid panels at 70° makes 1.44 kWh a day here, against 1.35 kWh on average in Guinea. The shortest day lasts 11 h 26 min, −8 min compared with Conakry.
Solar forecast for Donghol-Sigon, 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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A free, live card for Donghol-Sigon: 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.