Şanlıurfa · Turkey · 37.59° N · 38.96° E
Solar position in Hilvan
Sun position, daylight and the best solar panel angle for Hilvan — computed for 37.59° N, 38.96° E, 590 m above sea level.
The sun right now
Sun in Hilvan today
Saturday, 24 October 2026 · local time UTC+3
| Event | Time | Direction / height |
|---|---|---|
| Astronomical dawn | 05:13 | sun 18° below horizon |
| Nautical dawn | 05:43 | 12° below |
| Civil dawn | 06:14 | 6° below |
| Sunrise | 06:40 | 104° ESE |
| Golden hour ends | 07:16 | sun 6° up |
| Solar noon | 12:08 | 40.6° high |
| Golden hour starts | 16:59 | sun 6° up |
| Sunset | 17:35 | 256° WSW |
| Civil dusk | 18:02 | 6° below |
| Nautical dusk | 18:32 | 12° below |
| Astronomical dusk | 19:02 | 18° below |
| Day length | 10 h 54 min | |
Sun path diagram for Hilvan
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 75.9° at solar noon in Hilvan; on the December solstice only 29.0°. Sunrise swings from 59° ENE in June to 119° ESE in December — a 60° 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 | 07:35 | 12:35 | 17:35 | 10 h 00 min | 32.6° |
| February | 07:06 | 12:37 | 18:09 | 11 h 03 min | 41.9° |
| March | 06:26 | 12:31 | 18:36 | 12 h 10 min | 52.7° |
| April | 05:41 | 12:23 | 19:04 | 13 h 23 min | 64.3° |
| May | 05:10 | 12:20 | 19:31 | 14 h 21 min | 72.6° |
| June | 05:03 | 12:25 | 19:48 | 14 h 46 min | 75.9° |
| July | 05:19 | 12:30 | 19:41 | 14 h 23 min | 72.8° |
| August | 05:44 | 12:27 | 19:09 | 13 h 24 min | 64.5° |
| September | 06:10 | 12:17 | 18:23 | 12 h 12 min | 53.1° |
| October | 06:37 | 12:08 | 17:39 | 11 h 01 min | 41.7° |
| November | 07:10 | 12:09 | 17:09 | 10 h 00 min | 32.5° |
| December | 07:35 | 12:22 | 17:09 | 9 h 34 min | 29.0° |
A year of daylight in Hilvan
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 Hilvan
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: 1660 kWh per kWp.
60°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° | 1457 | 88% | 1.65 | 3.9× |
| 15° | 1606 | 97% | 2.32 | 2.7× |
| 30° | 1660 | 100% | 2.85 | 2.0× |
| 31° year-round best | 1660 | 100% | 2.87 | 2.0× |
| 38° = latitude | 1649 | 99% | 3.05 | 1.8× |
| 45° | 1617 | 97% | 3.19 | 1.7× |
| 60° off-grid best | 1480 | 89% | 3.33 | 1.5× |
| 70° | 1341 | 81% | 3.31 | 1.4× |
| 90° | 976 | 59% | 2.98 | 2.1× |
A fixed array in Hilvan produces the most over a year at 31°. The design month for an off-grid system is December: at 60° it makes 3.33 kWh per kWp a day, 16% more than at 31°, and costs 11% of the yearly total. Why steep panels win winter.
Off-grid solar in Hilvan 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 | 2.14 | 3.56 | 3.19 | 2.88 | 2.2 °C |
| February | 2.92 | 3.81 | 3.39 | 3.40 | 4.3 °C |
| March | 4.32 | 4.47 | 3.90 | 4.43 | 8.8 °C |
| April | 5.60 | 4.34 | 3.71 | 4.97 | 13.7 °C |
| May | 6.80 | 4.11 | 3.42 | 5.37 | 19.7 °C |
| June | 8.03 | 4.00 | 3.24 | 5.78 | 26.3 °C |
| July | 7.95 | 4.18 | 3.34 | 5.74 | 30.7 °C |
| August | 7.09 | 4.81 | 3.85 | 5.64 | 30.7 °C |
| September | 5.81 | 5.54 | 4.53 | 5.44 | 25.6 °C |
| October | 3.99 | 5.02 | 4.22 | 4.36 | 18.7 °C |
| November | 2.76 | 4.57 | 3.98 | 3.63 | 10.0 °C |
| December | 2.02 | 3.71 | 3.31 | 2.87 | 4.2 °C |
| Year | 4.96 avg | 4.35 avg | 1341 kWh | 1660 kWh |
Sizing example. To run a 1 kWh-per-day load through January on LiFePO4 batteries (charge controller, battery and inverter losses included) you need about 370 Wp of panels at 70°, versus 410 Wp at 31°. The steep array is 10% smaller for the same winter. Size your own system.
Row spacing in Hilvan
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.
4.6 mrow pitch at 70°
3.8 mrow pitch at 31°
How Hilvan compares in Turkey
Against the other 415 places in Turkey with climate data, for a fixed array at its best angle.
69thof 416 places in Turkey for sunshine, shared: 4.96 peak sun hours a day on flat ground.
+6%solar energy a year compared with the average place in Turkey: 1,660 against 1,567 kWh per kWp.
−22 mindaylight on the longest day, compared with Istanbul: 14 h 46 min against 15 h 08 min.
31°best year-round tilt here; across Turkey it runs from 29° in Antakya to 36° in Ardahan.
Of the 416 places in Turkey, Sarigerme and 2 other places get the most sun (5.11 peak sun hours a day) and Hopa the least (3.80); Hilvan ranks joint 69th. In its darkest month, January, 1 kWp of off-grid panels at 70° makes 3.19 kWh a day here, against 2.84 kWh on average in Turkey. The shortest day lasts 9 h 34 min, +21 min compared with Istanbul.
Solar forecast for Hilvan, 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 Hilvan
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Places near Hilvan
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A free, live card for Hilvan: 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.