Gansu · China · 33.63° N · 104.56° E
Solar position in Shawan
Sun position, daylight and the best solar panel angle for Shawan — computed for 33.63° N, 104.56° E, 1489 m above sea level.
The sun right now
Sun in Shawan today
Sunday, 25 October 2026 · local time UTC+8
| Event | Time | Direction / height |
|---|---|---|
| Astronomical dawn | 05:50 | sun 18° below horizon |
| Nautical dawn | 06:19 | 12° below |
| Civil dawn | 06:48 | 6° below |
| Sunrise | 07:14 | 104° ESE |
| Golden hour ends | 07:48 | sun 6° up |
| Solar noon | 12:45 | 44.3° high |
| Golden hour starts | 17:42 | sun 6° up |
| Sunset | 18:16 | 256° WSW |
| Civil dusk | 18:42 | 6° below |
| Nautical dusk | 19:11 | 12° below |
| Astronomical dusk | 19:40 | 18° below |
| Day length | 11 h 03 min | |
Sun path diagram for Shawan
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 79.8° at solar noon in Shawan; on the December solstice only 33.0°. Sunrise swings from 61° ENE in June to 118° ESE in December — a 57° 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 | 08:04 | 13:13 | 18:21 | 10 h 17 min | 36.5° |
| February | 07:39 | 13:15 | 18:51 | 11 h 11 min | 45.8° |
| March | 07:04 | 13:09 | 19:13 | 12 h 09 min | 56.6° |
| April | 06:24 | 13:00 | 19:36 | 13 h 12 min | 68.2° |
| May | 05:57 | 12:58 | 19:59 | 14 h 02 min | 76.6° |
| June | 05:51 | 13:03 | 20:15 | 14 h 23 min | 79.8° |
| July | 06:06 | 13:08 | 20:09 | 14 h 04 min | 76.8° |
| August | 06:27 | 13:04 | 19:41 | 13 h 14 min | 68.5° |
| September | 06:48 | 12:54 | 19:00 | 12 h 12 min | 57.1° |
| October | 07:11 | 12:46 | 18:21 | 11 h 10 min | 45.7° |
| November | 07:38 | 12:47 | 17:56 | 10 h 17 min | 36.5° |
| December | 08:02 | 12:59 | 17:57 | 9 h 55 min | 33.0° |
A year of daylight in Shawan
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 Shawan
Fixed array facing south (azimuth 180°). Energy per kWp from NASA POWER monthly climate, including clouds, temperature and snow reflection.
32°collects the most energy over a year: 1305 kWh per kWp.
25°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 | September kWh/kWp/day | Best ÷ worst month |
|---|---|---|---|---|
| 0° | 1152 | 88% | 2.66 | 1.8× |
| 15° | 1261 | 97% | 2.83 | 1.5× |
| 25° off-grid best | 1297 | 99% | 2.86 | 1.4× |
| 30° | 1304 | 100% | 2.85 | 1.4× |
| 32° year-round best | 1305 | 100% | 2.84 | 1.4× |
| 34° = latitude | 1304 | 100% | 2.83 | 1.4× |
| 45° | 1279 | 98% | 2.73 | 1.5× |
| 60° | 1189 | 91% | 2.47 | 1.8× |
| 70° | 1096 | 84% | 2.23 | 2.0× |
| 90° | 850 | 65% | 1.63 | 3.0× |
A fixed array in Shawan produces the most over a year at 32°. The design month for an off-grid system is September: at 25° it makes 2.86 kWh per kWp a day, and costs 1% of the yearly total. Why steep panels win winter.
Off-grid solar in Shawan at 70°
Daily energy of 1 kWp by month. Bars: panels at 70°. Line: panels at 32° (year-round best).
| Month | Sun hours, flat | Sun hours at 70° | kWh/kWp/day at 70° | at 32° | Mean temp. |
|---|---|---|---|---|---|
| January snow | 2.82 | 4.57 | 4.19 | 3.73 | -3.8 °C |
| February snow | 3.24 | 3.97 | 3.60 | 3.67 | -1.0 °C |
| March | 3.91 | 3.60 | 3.20 | 3.83 | 3.5 °C |
| April | 4.64 | 3.35 | 2.90 | 4.01 | 8.9 °C |
| May | 4.91 | 2.93 | 2.48 | 3.86 | 12.8 °C |
| June | 4.81 | 2.67 | 2.22 | 3.60 | 16.5 °C |
| July | 4.87 | 2.75 | 2.28 | 3.66 | 18.5 °C |
| August | 4.47 | 2.96 | 2.47 | 3.58 | 17.7 °C |
| September | 3.24 | 2.63 | 2.23 | 2.84 | 13.2 °C |
| October | 2.91 | 3.01 | 2.62 | 2.94 | 7.9 °C |
| November | 2.77 | 3.88 | 3.47 | 3.40 | 2.5 °C |
| December snow | 2.67 | 4.79 | 4.38 | 3.77 | -2.6 °C |
| Year | 3.77 avg | 3.42 avg | 1096 kWh | 1305 kWh |
Sizing example. To run a 1 kWh-per-day load through June on LiFePO4 batteries (charge controller, battery and inverter losses included) you need about 530 Wp of panels at 70°, versus 420 Wp at 32°. Here the lower tilt is the better winter choice — the sun stays high enough. Size your own system.
Row spacing in Shawan
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.
4.0 mrow pitch at 70°
3.5 mrow pitch at 32°
How Shawan compares in China
Against the other 2,094 places in China with climate data, for a fixed array at its best angle.
1049thof 2,095 places in China for sunshine, shared: 3.77 peak sun hours a day on flat ground.
+3%solar energy a year compared with the average place in China: 1,305 against 1,262 kWh per kWp.
+12 mindaylight on the longest day, compared with Shanghai: 14 h 23 min against 14 h 11 min.
32°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); Shawan ranks joint 1049th. In its darkest month, June, 1 kWp of off-grid panels at 70° makes 2.22 kWh a day here, against 2.06 kWh on average in China. The shortest day lasts 9 h 55 min, −12 min compared with Shanghai.
Solar forecast for Shawan, 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 Shawan
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Places near Shawan
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A free, live card for Shawan: 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.