Banská Bystrica Region · Slovakia · 48.57° N · 19.15° E
Solar position in Zvolen
Sun position, daylight and the best solar panel angle for Zvolen — computed for 48.57° N, 19.15° E, 297 m above sea level.
The sun right now
Sun in Zvolen today
Saturday, 24 October 2026 · local time UTC+2
| Event | Time | Direction / height |
|---|---|---|
| Astronomical dawn | 05:31 | sun 18° below horizon |
| Nautical dawn | 06:08 | 12° below |
| Civil dawn | 06:44 | 6° below |
| Sunrise | 07:16 | 107° ESE |
| Golden hour ends | 08:01 | sun 6° up |
| Solar noon | 12:27 | 29.6° high |
| Golden hour starts | 16:53 | sun 6° up |
| Sunset | 17:37 | 253° WSW |
| Civil dusk | 18:09 | 6° below |
| Nautical dusk | 18:46 | 12° below |
| Astronomical dusk | 19:22 | 18° below |
| Day length | 10 h 21 min | |
Sun path diagram for Zvolen
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 64.9° at solar noon in Zvolen; on the December solstice only 18.0°. Sunrise swings from 52° NE in June to 126° SE in December — a 74° 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 | 07:25 | 11:54 | 16:24 | 8 h 59 min | 21.6° |
| February | 06:40 | 11:57 | 17:14 | 10 h 34 min | 31.0° |
| March | 05:44 | 11:50 | 17:57 | 12 h 13 min | 41.8° |
| April | 05:41 | 12:42 | 19:43 | 14 h 01 min | 53.4° |
| May | 04:55 | 12:40 | 20:25 | 15 h 29 min | 61.7° |
| June | 04:41 | 12:45 | 20:49 | 16 h 08 min | 64.9° |
| July | 05:03 | 12:49 | 20:35 | 15 h 32 min | 61.9° |
| August | 05:44 | 12:46 | 19:47 | 14 h 02 min | 53.5° |
| September | 06:28 | 12:36 | 18:43 | 12 h 15 min | 42.0° |
| October | 07:12 | 12:27 | 17:43 | 10 h 31 min | 30.7° |
| November | 07:00 | 11:29 | 15:57 | 8 h 57 min | 21.5° |
| December | 07:32 | 11:41 | 15:50 | 8 h 17 min | 18.0° |
A year of daylight in Zvolen
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 Zvolen
Fixed array facing south (azimuth 180°). Energy per kWp from NASA POWER monthly climate, including clouds, temperature and snow reflection.
38°collects the most energy over a year: 1174 kWh per kWp.
76°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° | 969 | 83% | 0.60 | 7.7× |
| 15° | 1097 | 93% | 0.92 | 5.1× |
| 30° | 1164 | 99% | 1.20 | 3.9× |
| 38° year-round best | 1174 | 100% | 1.32 | 3.4× |
| 45° | 1168 | 99% | 1.41 | 3.0× |
| 49° = latitude | 1158 | 99% | 1.46 | 2.9× |
| 60° | 1107 | 94% | 1.55 | 2.5× |
| 70° | 1033 | 88% | 1.59 | 2.2× |
| 76° off-grid best | 977 | 83% | 1.60 | 2.1× |
| 90° | 818 | 70% | 1.56 | 1.7× |
A fixed array in Zvolen produces the most over a year at 38°. The design month for an off-grid system is December: at 76° it makes 1.60 kWh per kWp a day, 21% more than at 38°, and costs 17% of the yearly total. Why steep panels win winter.
Off-grid solar in Zvolen at 70°
Daily energy of 1 kWp by month. Bars: panels at 70°. Line: panels at 38° (year-round best).
| Month | Sun hours, flat | Sun hours at 70° | kWh/kWp/day at 70° | at 38° | Mean temp. |
|---|---|---|---|---|---|
| January snow | 0.97 | 2.03 | 1.84 | 1.56 | -3.9 °C |
| February snow | 1.75 | 2.96 | 2.68 | 2.43 | -2.2 °C |
| March | 2.97 | 3.64 | 3.25 | 3.44 | 2.3 °C |
| April | 4.37 | 4.07 | 3.55 | 4.23 | 8.6 °C |
| May | 5.17 | 3.88 | 3.31 | 4.37 | 13.5 °C |
| June | 5.61 | 3.82 | 3.20 | 4.44 | 17.4 °C |
| July | 5.55 | 3.92 | 3.26 | 4.46 | 19.5 °C |
| August | 4.89 | 4.15 | 3.46 | 4.34 | 19.3 °C |
| September | 3.49 | 3.87 | 3.31 | 3.66 | 14.0 °C |
| October | 2.14 | 3.13 | 2.73 | 2.70 | 8.4 °C |
| November | 1.11 | 2.01 | 1.78 | 1.62 | 3.2 °C |
| December snow | 0.77 | 1.77 | 1.59 | 1.32 | -2.3 °C |
| Year | 3.24 avg | 3.27 avg | 1033 kWh | 1174 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 740 Wp of panels at 70°, versus 890 Wp at 38°. The steep array is 17% smaller for the same winter. Size your own system.
Row spacing in Zvolen
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.
7.8 mrow pitch at 70°
6.2 mrow pitch at 38°
How Zvolen compares in Slovakia
Against the other 58 places in Slovakia with climate data, for a fixed array at its best angle.
29thof 59 places in Slovakia for sunshine, shared: 3.24 peak sun hours a day on flat ground.
±0%solar energy a year compared with the average place in Slovakia: 1,174 against 1,169 kWh per kWp.
+4 mindaylight on the longest day, compared with Bratislava: 16 h 08 min against 16 h 04 min.
38°best year-round tilt here; across Slovakia it runs from 37° in Bratislava to 39° in Prešov.
Of the 59 places in Slovakia, Komárno gets the most sun (3.41 peak sun hours a day) and Čadca the least (3.03); Zvolen ranks joint 29th. In its darkest month, December, 1 kWp of off-grid panels at 70° makes 1.59 kWh a day here, against 1.52 kWh on average in Slovakia. The shortest day lasts 8 h 17 min, −4 min compared with Bratislava.
Solar forecast for Zvolen, 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 Zvolen
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A free, live card for Zvolen: 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.