Xinjiang · China · 47.35° N · 87.82° E
Solar position in Beitun
Sun position, daylight and the best solar panel angle for Beitun — computed for 47.35° N, 87.82° E, 507 m above sea level.
The sun right now
Sun in Beitun today
Sunday, 25 October 2026 · local time UTC+6
| Event | Time | Direction / height |
|---|---|---|
| Astronomical dawn | 04:58 | sun 18° below horizon |
| Nautical dawn | 05:33 | 12° below |
| Civil dawn | 06:09 | 6° below |
| Sunrise | 06:41 | 107° ESE |
| Golden hour ends | 07:24 | sun 6° up |
| Solar noon | 11:52 | 30.6° high |
| Golden hour starts | 16:20 | sun 6° up |
| Sunset | 17:03 | 253° WSW |
| Civil dusk | 17:35 | 6° below |
| Nautical dusk | 18:10 | 12° below |
| Astronomical dusk | 18:46 | 18° below |
| Day length | 10 h 22 min | |
Sun path diagram for Beitun
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 66.1° at solar noon in Beitun; on the December solstice only 19.3°. Sunrise swings from 53° NE in June to 125° SE in December — a 72° 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 | 07:46 | 12:20 | 16:53 | 9 h 06 min | 22.8° |
| February | 07:04 | 12:22 | 17:41 | 10 h 37 min | 32.1° |
| March | 06:10 | 12:16 | 18:22 | 12 h 12 min | 42.9° |
| April | 05:10 | 12:07 | 19:05 | 13 h 56 min | 54.5° |
| May | 04:25 | 12:05 | 19:45 | 15 h 20 min | 62.9° |
| June | 04:11 | 12:10 | 20:08 | 15 h 57 min | 66.1° |
| July | 04:33 | 12:15 | 19:56 | 15 h 23 min | 63.1° |
| August | 05:12 | 12:11 | 19:10 | 13 h 58 min | 54.7° |
| September | 05:53 | 12:01 | 18:09 | 12 h 16 min | 43.3° |
| October | 06:35 | 11:53 | 17:10 | 10 h 35 min | 32.0° |
| November | 07:21 | 11:54 | 16:27 | 9 h 06 min | 22.8° |
| December | 07:52 | 12:06 | 16:20 | 8 h 28 min | 19.3° |
A year of daylight in Beitun
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 Beitun
Fixed array facing south (azimuth 180°). Energy per kWp from NASA POWER monthly climate, including clouds, temperature and snow reflection.
42°collects the most energy over a year: 1626 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° | 1274 | 78% | 0.98 | 5.8× |
| 15° | 1478 | 91% | 1.57 | 3.7× |
| 30° | 1597 | 98% | 2.09 | 2.8× |
| 42° year-round best | 1626 | 100% | 2.42 | 2.3× |
| 45° | 1624 | 100% | 2.49 | 2.2× |
| 47° = latitude | 1621 | 100% | 2.53 | 2.1× |
| 60° | 1559 | 96% | 2.74 | 1.8× |
| 70° | 1466 | 90% | 2.82 | 1.7× |
| 76° off-grid best | 1393 | 86% | 2.84 | 1.6× |
| 90° | 1179 | 73% | 2.76 | 1.8× |
A fixed array in Beitun produces the most over a year at 42°. The design month for an off-grid system is December: at 76° it makes 2.84 kWh per kWp a day, 17% more than at 42°, and costs 14% of the yearly total. Why steep panels win winter.
Off-grid solar in Beitun at 70°
Daily energy of 1 kWp by month. Bars: panels at 70°. Line: panels at 42° (year-round best).
| Month | Sun hours, flat | Sun hours at 70° | kWh/kWp/day at 70° | at 42° | Mean temp. |
|---|---|---|---|---|---|
| January snow | 1.67 | 4.10 | 3.89 | 3.37 | -13.0 °C |
| February snow | 2.67 | 4.83 | 4.52 | 4.18 | -9.6 °C |
| March snow | 3.94 | 5.16 | 4.66 | 4.81 | 0.2 °C |
| April | 5.48 | 5.15 | 4.48 | 5.35 | 9.4 °C |
| May | 6.80 | 4.91 | 4.16 | 5.56 | 16.1 °C |
| June | 7.09 | 4.52 | 3.73 | 5.25 | 22.7 °C |
| July | 6.74 | 4.53 | 3.70 | 5.10 | 24.7 °C |
| August | 6.04 | 5.04 | 4.16 | 5.23 | 22.7 °C |
| September | 4.74 | 5.53 | 4.70 | 5.19 | 15.6 °C |
| October | 2.97 | 4.74 | 4.18 | 4.14 | 6.7 °C |
| November snow | 1.63 | 3.56 | 3.25 | 2.87 | -2.7 °C |
| December snow | 1.20 | 3.01 | 2.82 | 2.42 | -10.4 °C |
| Year | 4.25 avg | 4.59 avg | 1466 kWh | 1626 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 420 Wp of panels at 70°, versus 490 Wp at 42°. The steep array is 14% smaller for the same winter. Size your own system.
Row spacing in Beitun
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.
7.2 mrow pitch at 70°
6.1 mrow pitch at 42°
How Beitun compares in China
Against the other 2,094 places in China with climate data, for a fixed array at its best angle.
347thof 2,095 places in China for sunshine, shared: 4.25 peak sun hours a day on flat ground.
+29%solar energy a year compared with the average place in China: 1,626 against 1,262 kWh per kWp.
+1 h 46 mindaylight on the longest day, compared with Shanghai: 15 h 57 min against 14 h 11 min.
42°best year-round tilt here; across China it runs from 14° in Haikou to 52° in Xilinji.
Of the 2,095 places in China, Nyêmo gets the most sun (5.75 peak sun hours a day) and Baima and 11 other places the least (2.91); Beitun ranks joint 347th. In its darkest month, December, 1 kWp of off-grid panels at 70° makes 2.82 kWh a day here, against 2.06 kWh on average in China. The shortest day lasts 8 h 28 min, −1 h 39 min compared with Shanghai.
Solar forecast for Beitun, 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 Beitun
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A free, live card for Beitun: 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.