Chelyabinsk · Russia · 54.94° N · 58.18° E
Solar position in Ust’-Katav
Sun position, daylight and the best solar panel angle for Ust’-Katav — computed for 54.94° N, 58.18° E, 302 m above sea level.
The sun right now
Sun in Ust’-Katav today
Saturday, 24 October 2026 · local time UTC+5
| Event | Time | Direction / height |
|---|---|---|
| Astronomical dawn | 05:52 | sun 18° below horizon |
| Nautical dawn | 06:34 | 12° below |
| Civil dawn | 07:16 | 6° below |
| Sunrise | 07:54 | 109° ESE |
| Golden hour ends | 08:46 | sun 6° up |
| Solar noon | 12:51 | 23.3° high |
| Golden hour starts | 16:55 | sun 6° up |
| Sunset | 17:47 | 250° WSW |
| Civil dusk | 18:25 | 6° below |
| Nautical dusk | 19:07 | 12° below |
| Astronomical dusk | 19:49 | 18° below |
| Day length | 9 h 54 min | |
Sun path diagram for Ust’-Katav
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 58.5° at solar noon in Ust’-Katav; on the December solstice only 11.7°. Sunrise swings from 45° NE in June to 132° SE in December — a 88° 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 | 09:15 | 13:18 | 17:22 | 8 h 06 min | 15.2° |
| February | 08:16 | 13:21 | 18:26 | 10 h 10 min | 24.6° |
| March | 07:07 | 13:14 | 19:22 | 12 h 15 min | 35.4° |
| April | 05:50 | 13:06 | 20:22 | 14 h 32 min | 47.0° |
| May | 04:50 | 13:04 | 21:18 | 16 h 28 min | 55.3° |
| June | 04:28 | 13:09 | 21:49 | 17 h 22 min | 58.5° |
| July | 04:57 | 13:13 | 21:28 | 16 h 31 min | 55.5° |
| August | 05:52 | 13:10 | 20:26 | 14 h 34 min | 47.1° |
| September | 06:50 | 13:00 | 19:09 | 12 h 19 min | 35.7° |
| October | 07:48 | 12:51 | 17:54 | 10 h 07 min | 24.4° |
| November | 08:50 | 12:52 | 16:55 | 8 h 05 min | 15.2° |
| December | 09:29 | 13:05 | 16:40 | 7 h 11 min | 11.7° |
A year of daylight in Ust’-Katav
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 Ust’-Katav
Fixed array facing south (azimuth 180°). Energy per kWp from NASA POWER monthly climate, including clouds, temperature and snow reflection.
45°collects the most energy over a year: 1174 kWh per kWp.
77°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° | 899 | 77% | 0.38 | 12.3× |
| 15° | 1048 | 89% | 0.72 | 6.8× |
| 30° | 1142 | 97% | 1.03 | 4.7× |
| 45° year-round best | 1174 | 100% | 1.28 | 3.6× |
| 55° = latitude | 1159 | 99% | 1.41 | 3.1× |
| 60° | 1141 | 97% | 1.46 | 2.9× |
| 70° | 1086 | 93% | 1.52 | 2.7× |
| 77° off-grid best | 1032 | 88% | 1.55 | 2.7× |
| 90° | 902 | 77% | 1.53 | 2.6× |
A fixed array in Ust’-Katav produces the most over a year at 45°. The design month for an off-grid system is December: at 77° it makes 1.55 kWh per kWp a day, 20% more than at 45°, and costs 12% of the yearly total. Why steep panels win winter.
Off-grid solar in Ust’-Katav at 70°
Daily energy of 1 kWp by month. Bars: panels at 70°. Line: panels at 45° (year-round best).
| Month | Sun hours, flat | Sun hours at 70° | kWh/kWp/day at 70° | at 45° | Mean temp. |
|---|---|---|---|---|---|
| January snow | 0.75 | 2.19 | 2.08 | 1.78 | -15.2 °C |
| February snow | 1.68 | 3.55 | 3.37 | 3.06 | -13.9 °C |
| March snow | 2.99 | 4.49 | 4.15 | 4.05 | -6.9 °C |
| April | 4.14 | 4.24 | 3.79 | 4.28 | 2.0 °C |
| May | 5.23 | 4.34 | 3.74 | 4.59 | 10.9 °C |
| June | 5.68 | 4.24 | 3.58 | 4.57 | 15.2 °C |
| July | 5.47 | 4.25 | 3.56 | 4.47 | 18.1 °C |
| August | 4.26 | 3.98 | 3.36 | 3.94 | 16.5 °C |
| September | 2.84 | 3.48 | 3.01 | 3.21 | 10.0 °C |
| October | 1.44 | 2.30 | 2.05 | 2.01 | 1.7 °C |
| November snow | 0.70 | 1.68 | 1.53 | 1.35 | -6.5 °C |
| December snow | 0.51 | 1.62 | 1.52 | 1.28 | -13.6 °C |
| Year | 2.98 avg | 3.36 avg | 1086 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 770 Wp of panels at 70°, versus 920 Wp at 45°. The steep array is 16% smaller for the same winter. Size your own system.
Row spacing in Ust’-Katav
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.
13.3 mrow pitch at 70°
10.9 mrow pitch at 45°
How Ust’-Katav compares in Russia
Against the other 979 places in Russia with climate data, for a fixed array at its best angle.
545thof 980 places in Russia for sunshine, shared: 2.98 peak sun hours a day on flat ground.
−2%solar energy a year compared with the average place in Russia: 1,174 against 1,196 kWh per kWp.
−12 mindaylight on the longest day, compared with Moscow: 17 h 22 min against 17 h 34 min.
45°best year-round tilt here; across Russia it runs from 32° in Derbent to 54° in Yakutsk.
Of the 980 places in Russia, Novorossiysk gets the most sun (3.96 peak sun hours a day) and Polyarnyy the least (1.93); Ust’-Katav ranks joint 545th. In its darkest month, December, 1 kWp of off-grid panels at 70° makes 1.53 kWh a day here, against 1.31 kWh on average in Russia. The shortest day lasts 7 h 11 min, +11 min compared with Moscow.
Solar forecast for Ust’-Katav, 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 Ust’-Katav: 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.