Hauts-de-France · France · 50.60° N · 3.09° E
Solar position in Ronchin
Sun position, daylight and the best solar panel angle for Ronchin — computed for 50.60° N, 3.09° E, 42 m above sea level.
The sun right now
Sun in Ronchin today
Saturday, 24 October 2026 · local time UTC+2
| Event | Time | Direction / height |
|---|---|---|
| Astronomical dawn | 06:35 | sun 18° below horizon |
| Nautical dawn | 07:13 | 12° below |
| Civil dawn | 07:51 | 6° below |
| Sunrise | 08:25 | 108° ESE |
| Golden hour ends | 09:11 | sun 6° up |
| Solar noon | 13:31 | 27.6° high |
| Golden hour starts | 17:51 | sun 6° up |
| Sunset | 18:37 | 252° WSW |
| Civil dusk | 19:11 | 6° below |
| Nautical dusk | 19:49 | 12° below |
| Astronomical dusk | 20:27 | 18° below |
| Day length | 10 h 13 min | |
Sun path diagram for Ronchin
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 62.8° at solar noon in Ronchin; on the December solstice only 16.0°. Sunrise swings from 50° NE in June to 128° SE in December — a 78° 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 | 08:37 | 12:59 | 17:21 | 8 h 44 min | 19.6° |
| February | 07:48 | 13:01 | 18:15 | 10 h 27 min | 29.0° |
| March | 06:48 | 12:55 | 19:02 | 12 h 14 min | 39.8° |
| April | 06:41 | 13:46 | 20:52 | 14 h 11 min | 51.4° |
| May | 05:51 | 13:44 | 21:37 | 15 h 46 min | 59.7° |
| June | 05:35 | 13:49 | 22:03 | 16 h 29 min | 62.8° |
| July | 05:59 | 13:53 | 21:47 | 15 h 48 min | 59.8° |
| August | 06:44 | 13:50 | 20:55 | 14 h 11 min | 51.4° |
| September | 07:32 | 13:40 | 19:48 | 12 h 16 min | 40.0° |
| October | 08:20 | 13:31 | 18:43 | 10 h 23 min | 28.6° |
| November | 08:12 | 12:33 | 16:54 | 8 h 42 min | 19.5° |
| December | 08:46 | 12:45 | 16:45 | 7 h 59 min | 16.0° |
A year of daylight in Ronchin
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 Ronchin
Fixed array facing south (azimuth 180°). Energy per kWp from NASA POWER monthly climate, including clouds, temperature and snow reflection.
39°collects the most energy over a year: 1136 kWh per kWp.
72°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 | December kWh/kWp/day | Best ÷ worst month |
|---|---|---|---|---|
| 0° | 926 | 82% | 0.50 | 9.2× |
| 15° | 1054 | 93% | 0.81 | 5.8× |
| 30° | 1124 | 99% | 1.08 | 4.3× |
| 39° year-round best | 1136 | 100% | 1.21 | 3.7× |
| 45° | 1131 | 100% | 1.28 | 3.4× |
| 51° = latitude | 1116 | 98% | 1.34 | 3.1× |
| 60° | 1074 | 95% | 1.40 | 2.9× |
| 70° | 1003 | 88% | 1.43 | 2.6× |
| 72° off-grid best | 986 | 87% | 1.43 | 2.5× |
| 90° | 794 | 70% | 1.37 | 2.1× |
A fixed array in Ronchin produces the most over a year at 39°. The design month for an off-grid system is December: at 72° it makes 1.43 kWh per kWp a day, 18% more than at 39°, and costs 13% of the yearly total. Why steep panels win winter.
Off-grid solar in Ronchin at 70°
Daily energy of 1 kWp by month. Bars: panels at 70°. Line: panels at 39° (year-round best).
| Month | Sun hours, flat | Sun hours at 70° | kWh/kWp/day at 70° | at 39° | Mean temp. |
|---|---|---|---|---|---|
| January | 0.84 | 1.84 | 1.63 | 1.42 | 3.2 °C |
| February | 1.54 | 2.56 | 2.27 | 2.15 | 3.5 °C |
| March | 2.79 | 3.53 | 3.11 | 3.24 | 6.0 °C |
| April | 4.41 | 4.26 | 3.70 | 4.34 | 9.4 °C |
| May | 5.13 | 3.98 | 3.40 | 4.41 | 12.8 °C |
| June | 5.56 | 3.92 | 3.30 | 4.48 | 15.9 °C |
| July | 5.36 | 3.93 | 3.29 | 4.38 | 17.8 °C |
| August | 4.50 | 3.91 | 3.28 | 4.02 | 17.6 °C |
| September | 3.42 | 3.88 | 3.30 | 3.61 | 14.8 °C |
| October | 2.00 | 2.96 | 2.55 | 2.51 | 11.3 °C |
| November | 1.00 | 1.97 | 1.71 | 1.53 | 7.1 °C |
| December | 0.67 | 1.63 | 1.43 | 1.21 | 3.9 °C |
| Year | 3.11 avg | 3.20 avg | 1003 kWh | 1136 kWh |
Sizing example. To run a 1 kWh-per-day load through December on LiFePO4 batteries (charge controller, battery and inverter losses included) you need about 820 Wp of panels at 70°, versus 970 Wp at 39°. The steep array is 15% smaller for the same winter. Size your own system.
Row spacing in Ronchin
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.
9.0 mrow pitch at 70°
7.1 mrow pitch at 39°
How Ronchin compares in France
Against the other 656 places in France with climate data, for a fixed array at its best angle.
630thof 657 places in France for sunshine, shared: 3.11 peak sun hours a day on flat ground.
−10%solar energy a year compared with the average place in France: 1,136 against 1,261 kWh per kWp.
+18 mindaylight on the longest day, compared with Paris: 16 h 29 min against 16 h 11 min.
39°best year-round tilt here; across France it runs from 33° in Ajaccio to 39° in Lille.
Of the 657 places in France, Marseille 12 and 5 other places get the most sun (4.46 peak sun hours a day) and Maubeuge and one other place the least (3.10); Ronchin ranks joint 630th. In its darkest month, December, 1 kWp of off-grid panels at 70° makes 1.43 kWh a day here, against 1.86 kWh on average in France. The shortest day lasts 7 h 59 min, −16 min compared with Paris.
Solar forecast for Ronchin, 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 Ronchin
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Places near Ronchin
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A free, live card for Ronchin: 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.