Bulgaria · 44.12° N · 27.26° E
Solar position in Silistra
Sun position, daylight and the best solar panel angle for Silistra — computed for 44.12° N, 27.26° E, 25 m above sea level.
The sun right now
Sun in Silistra today
Saturday, 24 October 2026 · local time UTC+3
| Event | Time | Direction / height |
|---|---|---|
| Astronomical dawn | 06:00 | sun 18° below horizon |
| Nautical dawn | 06:33 | 12° below |
| Civil dawn | 07:07 | 6° below |
| Sunrise | 07:36 | 106° ESE |
| Golden hour ends | 08:17 | sun 6° up |
| Solar noon | 12:54 | 34.1° high |
| Golden hour starts | 17:32 | sun 6° up |
| Sunset | 18:12 | 254° WSW |
| Civil dusk | 18:42 | 6° below |
| Nautical dusk | 19:16 | 12° below |
| Astronomical dusk | 19:49 | 18° below |
| Day length | 10 h 36 min | |
Sun path diagram for Silistra
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 69.3° at solar noon in Silistra; on the December solstice only 22.5°. Sunrise swings from 55° NE in June to 123° ESE in December — a 67° 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 | 07:39 | 12:22 | 17:05 | 9 h 27 min | 26.1° |
| February | 07:01 | 12:24 | 17:48 | 10 h 47 min | 35.4° |
| March | 06:12 | 12:18 | 18:24 | 12 h 12 min | 46.2° |
| April | 06:17 | 13:09 | 20:02 | 13 h 44 min | 57.8° |
| May | 05:38 | 13:07 | 20:36 | 14 h 58 min | 66.1° |
| June | 05:27 | 13:12 | 20:57 | 15 h 30 min | 69.3° |
| July | 05:47 | 13:17 | 20:47 | 15 h 00 min | 66.3° |
| August | 06:21 | 13:13 | 20:06 | 13 h 45 min | 57.9° |
| September | 06:56 | 13:03 | 19:10 | 12 h 14 min | 46.5° |
| October | 07:33 | 12:55 | 18:17 | 10 h 44 min | 35.1° |
| November | 07:13 | 11:56 | 16:39 | 9 h 26 min | 26.0° |
| December | 07:42 | 12:08 | 16:35 | 8 h 52 min | 22.5° |
A year of daylight in Silistra
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 Silistra
Fixed array facing south (azimuth 180°). Energy per kWp from NASA POWER monthly climate, including clouds, temperature and snow reflection.
34°collects the most energy over a year: 1354 kWh per kWp.
66°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° | 1153 | 85% | 0.95 | 5.6× |
| 15° | 1289 | 95% | 1.37 | 3.9× |
| 30° | 1350 | 100% | 1.71 | 3.0× |
| 34° year-round best | 1354 | 100% | 1.79 | 2.9× |
| 44° = latitude | 1338 | 99% | 1.94 | 2.5× |
| 45° | 1334 | 99% | 1.95 | 2.5× |
| 60° | 1243 | 92% | 2.06 | 2.1× |
| 66° off-grid best | 1186 | 88% | 2.07 | 1.9× |
| 70° | 1143 | 84% | 2.07 | 1.8× |
| 90° | 868 | 64% | 1.91 | 1.5× |
A fixed array in Silistra produces the most over a year at 34°. The design month for an off-grid system is December: at 66° it makes 2.07 kWh per kWp a day, 16% more than at 34°, and costs 12% of the yearly total. Why steep panels win winter.
Off-grid solar in Silistra at 70°
Daily energy of 1 kWp by month. Bars: panels at 70°. Line: panels at 34° (year-round best).
| Month | Sun hours, flat | Sun hours at 70° | kWh/kWp/day at 70° | at 34° | Mean temp. |
|---|---|---|---|---|---|
| January snow | 1.40 | 2.58 | 2.33 | 2.02 | -1.0 °C |
| February | 2.20 | 3.11 | 2.79 | 2.73 | 1.3 °C |
| March | 3.39 | 3.86 | 3.40 | 3.68 | 6.0 °C |
| April | 4.85 | 4.22 | 3.65 | 4.54 | 11.2 °C |
| May | 5.94 | 4.12 | 3.47 | 4.91 | 17.4 °C |
| June | 6.48 | 3.99 | 3.28 | 4.98 | 22.1 °C |
| July | 6.59 | 4.20 | 3.43 | 5.11 | 24.7 °C |
| August | 5.89 | 4.63 | 3.79 | 5.03 | 24.7 °C |
| September | 4.30 | 4.51 | 3.78 | 4.29 | 19.1 °C |
| October | 2.75 | 3.78 | 3.25 | 3.25 | 12.5 °C |
| November | 1.57 | 2.65 | 2.32 | 2.12 | 6.7 °C |
| December | 1.19 | 2.31 | 2.07 | 1.79 | 0.8 °C |
| Year | 3.89 avg | 3.67 avg | 1143 kWh | 1354 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 570 Wp of panels at 70°, versus 660 Wp at 34°. The steep array is 14% smaller for the same winter. Size your own system.
Row spacing in Silistra
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.
6.1 mrow pitch at 70°
4.9 mrow pitch at 34°
How Silistra compares in Bulgaria
Against the other 54 places in Bulgaria with climate data, for a fixed array at its best angle.
44thof 55 places in Bulgaria for sunshine, shared: 3.89 peak sun hours a day on flat ground.
−2%solar energy a year compared with the average place in Bulgaria: 1,354 against 1,377 kWh per kWp.
+11 mindaylight on the longest day, compared with Sofia: 15 h 30 min against 15 h 20 min.
34°best year-round tilt here; across Bulgaria it runs from 32° in Burgas to 35° in Sofia.
Of the 55 places in Bulgaria, Petrich gets the most sun (4.15 peak sun hours a day) and Vidin the least (3.79); Silistra ranks joint 44th. In its darkest month, December, 1 kWp of off-grid panels at 70° makes 2.07 kWh a day here, against 2.34 kWh on average in Bulgaria. The shortest day lasts 8 h 52 min, −10 min compared with Sofia.
Solar forecast for Silistra, 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 Silistra
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Places near Silistra
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A free, live card for Silistra: 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.