Chlef · Algeria · 36.10° N · 1.20° E
Solar position in Oued Sly
Sun position, daylight and the best solar panel angle for Oued Sly — computed for 36.10° N, 1.20° E, 90 m above sea level.
The sun right now
Sun in Oued Sly today
Saturday, 24 October 2026 · local time UTC+1
| Event | Time | Direction / height |
|---|---|---|
| Astronomical dawn | 05:44 | sun 18° below horizon |
| Nautical dawn | 06:13 | 12° below |
| Civil dawn | 06:43 | 6° below |
| Sunrise | 07:10 | 104° ESE |
| Golden hour ends | 07:45 | sun 6° up |
| Solar noon | 12:39 | 42.1° high |
| Golden hour starts | 17:32 | sun 6° up |
| Sunset | 18:08 | 256° WSW |
| Civil dusk | 18:34 | 6° below |
| Nautical dusk | 19:04 | 12° below |
| Astronomical dusk | 19:34 | 18° below |
| Day length | 10 h 58 min | |
Sun path diagram for Oued Sly
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 77.3° at solar noon in Oued Sly; on the December solstice only 30.5°. Sunrise swings from 60° ENE in June to 119° ESE in December — a 59° 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 | 08:03 | 13:06 | 18:10 | 10 h 07 min | 34.1° |
| February | 07:35 | 13:08 | 18:42 | 11 h 07 min | 43.5° |
| March | 06:57 | 13:02 | 19:07 | 12 h 10 min | 54.3° |
| April | 06:14 | 12:54 | 19:33 | 13 h 19 min | 65.9° |
| May | 05:45 | 12:51 | 19:58 | 14 h 14 min | 74.1° |
| June | 05:38 | 12:57 | 20:15 | 14 h 37 min | 77.3° |
| July | 05:53 | 13:01 | 20:09 | 14 h 15 min | 74.3° |
| August | 06:18 | 12:58 | 19:37 | 13 h 20 min | 65.9° |
| September | 06:42 | 12:48 | 18:53 | 12 h 11 min | 54.5° |
| October | 07:07 | 12:39 | 18:11 | 11 h 04 min | 43.1° |
| November | 07:37 | 12:40 | 17:44 | 10 h 06 min | 33.9° |
| December | 08:02 | 12:53 | 17:44 | 9 h 42 min | 30.5° |
A year of daylight in Oued Sly
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 Oued Sly
Fixed array facing south (azimuth 180°). Energy per kWp from NASA POWER monthly climate, including clouds, temperature and snow reflection.
31°collects the most energy over a year: 1649 kWh per kWp.
61°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° | 1451 | 88% | 1.85 | 3.3× |
| 15° | 1597 | 97% | 2.55 | 2.3× |
| 30° | 1649 | 100% | 3.09 | 1.8× |
| 31° year-round best | 1649 | 100% | 3.12 | 1.8× |
| 36° = latitude | 1643 | 100% | 3.26 | 1.6× |
| 45° | 1605 | 97% | 3.44 | 1.4× |
| 60° | 1469 | 89% | 3.57 | 1.2× |
| 61° off-grid best | 1457 | 88% | 3.57 | 1.2× |
| 70° | 1332 | 81% | 3.53 | 1.3× |
| 90° | 974 | 59% | 3.16 | 2.1× |
A fixed array in Oued Sly produces the most over a year at 31°. The design month for an off-grid system is December: at 61° it makes 3.57 kWh per kWp a day, 14% more than at 31°, and costs 12% of the yearly total. Why steep panels win winter.
Off-grid solar in Oued Sly at 70°
Daily energy of 1 kWp by month. Bars: panels at 70°. Line: panels at 31° (year-round best).
| Month | Sun hours, flat | Sun hours at 70° | kWh/kWp/day at 70° | at 31° | Mean temp. |
|---|---|---|---|---|---|
| January | 2.62 | 4.37 | 3.81 | 3.45 | 10.2 °C |
| February | 3.48 | 4.61 | 4.00 | 4.02 | 10.6 °C |
| March | 4.68 | 4.76 | 4.09 | 4.70 | 12.9 °C |
| April | 5.73 | 4.32 | 3.68 | 5.01 | 15.4 °C |
| May | 6.67 | 3.91 | 3.27 | 5.24 | 18.8 °C |
| June | 7.49 | 3.75 | 3.08 | 5.48 | 23.0 °C |
| July | 7.33 | 3.95 | 3.20 | 5.41 | 26.5 °C |
| August | 6.59 | 4.43 | 3.59 | 5.28 | 26.8 °C |
| September | 5.24 | 4.72 | 3.90 | 4.78 | 23.4 °C |
| October | 4.04 | 4.87 | 4.08 | 4.30 | 19.8 °C |
| November | 2.76 | 4.20 | 3.60 | 3.38 | 14.3 °C |
| December | 2.31 | 4.07 | 3.53 | 3.12 | 11.3 °C |
| Year | 4.92 avg | 4.33 avg | 1332 kWh | 1649 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 380 Wp of panels at 70°, versus 380 Wp at 31°. Here the lower tilt is the better winter choice — the sun stays high enough. Size your own system.
Row spacing in Oued Sly
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.
4.3 mrow pitch at 70°
3.7 mrow pitch at 31°
How Oued Sly compares in Algeria
Against the other 293 places in Algeria with climate data, for a fixed array at its best angle.
145thof 294 places in Algeria for sunshine, shared: 4.92 peak sun hours a day on flat ground.
−3%solar energy a year compared with the average place in Algeria: 1,649 against 1,694 kWh per kWp.
−4 mindaylight on the longest day, compared with Algiers: 14 h 37 min against 14 h 41 min.
31°best year-round tilt here; across Algeria it runs from 23° in Tamanghasset to 32° in Ouled Djellal.
Of the 294 places in Algeria, Tamanghasset gets the most sun (6.40 peak sun hours a day) and Berrahal the least (4.73); Oued Sly ranks joint 145th. In its darkest month, June, 1 kWp of off-grid panels at 70° makes 3.08 kWh a day here, against 3.05 kWh on average in Algeria. The shortest day lasts 9 h 42 min, +3 min compared with Algiers.
Solar forecast for Oued Sly, 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 Oued Sly: 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.