Bratislava Region · Slovakia · 48.12° N · 17.13° E
Solar position in Petržalka
Sun position, daylight and the best solar panel angle for Petržalka — computed for 48.12° N, 17.13° E, 141 m above sea level.
The sun right now
Sun in Petržalka today
Saturday, 24 October 2026 · local time UTC+2
| Event | Time | Direction / height |
|---|---|---|
| Astronomical dawn | 05:39 | sun 18° below horizon |
| Nautical dawn | 06:15 | 12° below |
| Civil dawn | 06:52 | 6° below |
| Sunrise | 07:24 | 107° ESE |
| Golden hour ends | 08:08 | sun 6° up |
| Solar noon | 12:35 | 30.1° high |
| Golden hour starts | 17:02 | sun 6° up |
| Sunset | 17:46 | 253° WSW |
| Civil dusk | 18:18 | 6° below |
| Nautical dusk | 18:54 | 12° below |
| Astronomical dusk | 19:30 | 18° below |
| Day length | 10 h 22 min | |
Sun path diagram for Petržalka
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 65.3° at solar noon in Petržalka; on the December solstice only 18.5°. Sunrise swings from 52° NE in June to 125° SE in December — a 73° 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 | 07:32 | 12:02 | 16:33 | 9 h 02 min | 22.1° |
| February | 06:47 | 12:05 | 17:22 | 10 h 35 min | 31.4° |
| March | 05:52 | 11:58 | 18:05 | 12 h 13 min | 42.2° |
| April | 05:50 | 12:50 | 19:50 | 14 h 00 min | 53.8° |
| May | 05:05 | 12:48 | 20:31 | 15 h 26 min | 62.1° |
| June | 04:51 | 12:53 | 20:55 | 16 h 04 min | 65.3° |
| July | 05:13 | 12:57 | 20:41 | 15 h 28 min | 62.3° |
| August | 05:54 | 12:54 | 19:54 | 14 h 00 min | 53.9° |
| September | 06:36 | 12:44 | 18:51 | 12 h 15 min | 42.5° |
| October | 07:19 | 12:35 | 17:51 | 10 h 32 min | 31.1° |
| November | 07:06 | 11:37 | 16:07 | 9 h 00 min | 22.0° |
| December | 07:38 | 11:49 | 16:00 | 8 h 21 min | 18.5° |
A year of daylight in Petržalka
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 Petržalka
Fixed array facing south (azimuth 180°). Energy per kWp from NASA POWER monthly climate, including clouds, temperature and snow reflection.
37°collects the most energy over a year: 1198 kWh per kWp.
72°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° | 995 | 83% | 0.62 | 7.6× |
| 15° | 1124 | 94% | 0.94 | 5.2× |
| 30° | 1190 | 99% | 1.21 | 3.9× |
| 37° year-round best | 1198 | 100% | 1.31 | 3.5× |
| 45° | 1189 | 99% | 1.40 | 3.1× |
| 48° = latitude | 1181 | 99% | 1.43 | 3.0× |
| 60° | 1122 | 94% | 1.52 | 2.7× |
| 70° | 1043 | 87% | 1.55 | 2.4× |
| 72° off-grid best | 1024 | 85% | 1.55 | 2.3× |
| 90° | 816 | 68% | 1.48 | 1.9× |
A fixed array in Petržalka produces the most over a year at 37°. The design month for an off-grid system is December: at 72° it makes 1.55 kWh per kWp a day, 18% more than at 37°, and costs 15% of the yearly total. Why steep panels win winter.
Off-grid solar in Petržalka at 70°
Daily energy of 1 kWp by month. Bars: panels at 70°. Line: panels at 37° (year-round best).
| Month | Sun hours, flat | Sun hours at 70° | kWh/kWp/day at 70° | at 37° | Mean temp. |
|---|---|---|---|---|---|
| January snow | 1.01 | 2.01 | 1.81 | 1.56 | -1.9 °C |
| February snow | 1.82 | 2.89 | 2.60 | 2.43 | 0.1 °C |
| March | 3.04 | 3.71 | 3.29 | 3.47 | 4.5 °C |
| April | 4.59 | 4.27 | 3.70 | 4.43 | 10.4 °C |
| May | 5.35 | 3.99 | 3.38 | 4.51 | 15.3 °C |
| June | 5.81 | 3.91 | 3.24 | 4.57 | 19.8 °C |
| July | 5.72 | 4.00 | 3.29 | 4.56 | 22.0 °C |
| August | 5.00 | 4.22 | 3.49 | 4.40 | 21.5 °C |
| September | 3.61 | 4.00 | 3.39 | 3.75 | 15.9 °C |
| October | 2.20 | 3.18 | 2.76 | 2.72 | 10.1 °C |
| November | 1.15 | 2.05 | 1.80 | 1.64 | 4.8 °C |
| December snow | 0.80 | 1.73 | 1.55 | 1.31 | -0.5 °C |
| Year | 3.35 avg | 3.33 avg | 1043 kWh | 1198 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 760 Wp of panels at 70°, versus 900 Wp at 37°. The steep array is 16% smaller for the same winter. Size your own system.
Row spacing in Petržalka
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.
7.6 mrow pitch at 70°
6.0 mrow pitch at 37°
How Petržalka compares in Slovakia
Against the other 58 places in Slovakia with climate data, for a fixed array at its best angle.
4thof 59 places in Slovakia for sunshine, shared: 3.35 peak sun hours a day on flat ground.
+3%solar energy a year compared with the average place in Slovakia: 1,198 against 1,169 kWh per kWp.
±0 mindaylight on the longest day, compared with Bratislava: 16 h 04 min against 16 h 04 min.
37°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); Petržalka ranks joint 4th. In its darkest month, December, 1 kWp of off-grid panels at 70° makes 1.55 kWh a day here, against 1.52 kWh on average in Slovakia. The shortest day lasts 8 h 21 min, ±0 min compared with Bratislava.
Solar forecast for Petržalka, 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 Petržalka: 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.