Ilfov · Romania · 44.49° N · 26.17° E
Solar position in Voluntari
Sun position, daylight and the best solar panel angle for Voluntari — computed for 44.49° N, 26.17° E, 82 m above sea level.
The sun right now
Sun in Voluntari today
Saturday, 24 October 2026 · local time UTC+3
| Event | Time | Direction / height |
|---|---|---|
| Astronomical dawn | 06:04 | sun 18° below horizon |
| Nautical dawn | 06:38 | 12° below |
| Civil dawn | 07:12 | 6° below |
| Sunrise | 07:41 | 106° ESE |
| Golden hour ends | 08:22 | sun 6° up |
| Solar noon | 12:59 | 33.7° high |
| Golden hour starts | 17:35 | sun 6° up |
| Sunset | 18:16 | 254° WSW |
| Civil dusk | 18:46 | 6° below |
| Nautical dusk | 19:20 | 12° below |
| Astronomical dusk | 19:53 | 18° below |
| Day length | 10 h 35 min | |
Sun path diagram for Voluntari
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 69.0° at solar noon in Voluntari; on the December solstice only 22.1°. Sunrise swings from 55° NE in June to 123° ESE in December — a 68° 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 | 07:44 | 12:26 | 17:09 | 9 h 24 min | 25.7° |
| February | 07:06 | 12:29 | 17:52 | 10 h 46 min | 35.1° |
| March | 06:17 | 12:22 | 18:28 | 12 h 12 min | 45.8° |
| April | 06:21 | 13:14 | 20:07 | 13 h 46 min | 57.5° |
| May | 05:41 | 13:11 | 20:42 | 15 h 01 min | 65.7° |
| June | 05:30 | 13:17 | 21:03 | 15 h 33 min | 69.0° |
| July | 05:50 | 13:21 | 20:52 | 15 h 02 min | 65.9° |
| August | 06:24 | 13:18 | 20:11 | 13 h 46 min | 57.6° |
| September | 07:01 | 13:08 | 19:15 | 12 h 14 min | 46.1° |
| October | 07:37 | 12:59 | 18:21 | 10 h 43 min | 34.8° |
| November | 07:19 | 12:00 | 16:42 | 9 h 23 min | 25.6° |
| December | 07:48 | 12:13 | 16:38 | 8 h 50 min | 22.1° |
A year of daylight in Voluntari
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 Voluntari
Fixed array facing south (azimuth 180°). Energy per kWp from NASA POWER monthly climate, including clouds, temperature and snow reflection.
35°collects the most energy over a year: 1341 kWh per kWp.
69°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° | 1135 | 85% | 0.91 | 5.6× |
| 15° | 1273 | 95% | 1.33 | 4.0× |
| 30° | 1337 | 100% | 1.68 | 3.0× |
| 35° year-round best | 1341 | 100% | 1.77 | 2.8× |
| 44° = latitude | 1328 | 99% | 1.92 | 2.5× |
| 45° | 1325 | 99% | 1.93 | 2.5× |
| 60° | 1238 | 92% | 2.07 | 2.0× |
| 69° off-grid best | 1152 | 86% | 2.09 | 1.8× |
| 70° | 1141 | 85% | 2.09 | 1.8× |
| 90° | 872 | 65% | 1.97 | 1.5× |
A fixed array in Voluntari produces the most over a year at 35°. The design month for an off-grid system is December: at 69° it makes 2.09 kWh per kWp a day, 18% more than at 35°, and costs 14% of the yearly total. Why steep panels win winter.
Off-grid solar in Voluntari at 70°
Daily energy of 1 kWp by month. Bars: panels at 70°. Line: panels at 35° (year-round best).
| Month | Sun hours, flat | Sun hours at 70° | kWh/kWp/day at 70° | at 35° | Mean temp. |
|---|---|---|---|---|---|
| January snow | 1.38 | 2.58 | 2.33 | 2.03 | -1.5 °C |
| February | 2.21 | 3.17 | 2.85 | 2.78 | 0.9 °C |
| March | 3.45 | 3.99 | 3.52 | 3.80 | 6.1 °C |
| April | 4.82 | 4.22 | 3.64 | 4.51 | 11.6 °C |
| May | 5.84 | 4.09 | 3.44 | 4.81 | 17.6 °C |
| June | 6.33 | 3.94 | 3.24 | 4.86 | 22.1 °C |
| July | 6.45 | 4.16 | 3.39 | 5.00 | 24.7 °C |
| August | 5.77 | 4.56 | 3.74 | 4.92 | 24.7 °C |
| September | 4.21 | 4.43 | 3.72 | 4.22 | 19.1 °C |
| October | 2.72 | 3.79 | 3.27 | 3.26 | 12.3 °C |
| November | 1.52 | 2.60 | 2.28 | 2.09 | 6.3 °C |
| December snow | 1.15 | 2.33 | 2.09 | 1.77 | 0.4 °C |
| Year | 3.83 avg | 3.66 avg | 1141 kWh | 1341 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 560 Wp of panels at 70°, versus 670 Wp at 35°. The steep array is 15% smaller for the same winter. Size your own system.
Row spacing in Voluntari
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.
6.2 mrow pitch at 70°
5.0 mrow pitch at 35°
How Voluntari compares in Romania
Against the other 125 places in Romania with climate data, for a fixed array at its best angle.
22ndof 126 places in Romania for sunshine, shared: 3.83 peak sun hours a day on flat ground.
+3%solar energy a year compared with the average place in Romania: 1,341 against 1,300 kWh per kWp.
±0 mindaylight on the longest day, compared with Bucharest: 15 h 33 min against 15 h 33 min.
35°best year-round tilt here; across Romania it runs from 33° in Mangalia to 39° in Bistriţa.
Of the 126 places in Romania, Mangalia gets the most sun (3.93 peak sun hours a day) and Vişeu de Sus and one other place the least (3.33); Voluntari ranks joint 22nd. In its darkest month, December, 1 kWp of off-grid panels at 70° makes 2.09 kWh a day here, against 2.01 kWh on average in Romania. The shortest day lasts 8 h 50 min, ±0 min compared with Bucharest.
Solar forecast for Voluntari, 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 Voluntari
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A free, live card for Voluntari: 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.