Solarposition.org

Gansu · China · 33.43° N · 104.81° E

Solar position in Liangshui

Sun position, daylight and the best solar panel angle for Liangshui — computed for 33.43° N, 104.81° E, 1054 m above sea level.

Sunrise today07:13104° ESE
Sunset today18:16256° WSW
Best panel angle31°year-round, facing south
Off-grid angle28°best for the darkest month

The sun right now

Azimuth180.0°
Elevation44.5°
At solar noon, 12:44Open on the sun map

Sun in Liangshui today

Sunday, 25 October 2026 · local time UTC+8

EventTimeDirection / height
Astronomical dawn05:49sun 18° below horizon
Nautical dawn06:1812° below
Civil dawn06:476° below
Sunrise07:13104° ESE
Golden hour ends07:47sun 6° up
Solar noon12:4444.5° high
Golden hour starts17:42sun 6° up
Sunset18:16256° WSW
Civil dusk18:416° below
Nautical dusk19:1012° below
Astronomical dusk19:3918° below
Day length11 h 03 min

Sun path diagram for Liangshui

Where the sun stands in the sky: the centre is straight overhead, the outer ring is the horizon. Numbers mark local clock hours.

15°30°45°60°75°N30°60°E120°150°S210°240°W300°330°June solstice67891011121314151617181920EquinoxDecember solstice91011121314151617Today
  • June solstice
  • Equinox
  • December solstice
  • Today

On the June solstice the sun reaches 80.0° at solar noon in Liangshui; on the December solstice only 33.2°. 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.

MonthSunriseSolar noonSunsetDay lengthNoon elevation
January08:0313:1218:2110 h 18 min36.7°
February07:3813:1418:5011 h 12 min46.0°
March07:0313:0819:1212 h 09 min56.8°
April06:2312:5919:3513 h 12 min68.4°
May05:5612:5719:5814 h 01 min76.8°
June05:5113:0220:1314 h 22 min80.0°
July06:0513:0720:0814 h 03 min77.0°
August06:2713:0319:4013 h 13 min68.7°
September06:4712:5318:5912 h 11 min57.3°
October07:0912:4518:2011 h 11 min45.9°
November07:3712:4617:5510 h 18 min36.7°
December08:0012:5817:569 h 56 min33.2°

A year of daylight in Liangshui

Each column is one day of 2026. Bright: sun above the horizon; soft: civil twilight; line: solar noon. Steps are daylight saving time changes.

00:0003:0006:0009:0012:0015:0018:0021:0000:00JanFebMarAprMayJunJulAugSepOctNovDec

Best solar panel angle in Liangshui

Fixed array facing south (azimuth 180°). Energy per kWp from NASA POWER monthly climate, including clouds, temperature and snow reflection.

31°collects the most energy over a year: 1243 kWh per kWp.

28°gives the most in the darkest month — the one an off-grid system is sized for.

40%50%60%70%80%90%100%0°10°20°30°40°50°60°70°80°90°Best year-round 31°Best worst-month 28°70°Yearly energyWorst-month energy
  • Yearly energy
  • Worst-month energy
TiltkWh/kWp per yearShare of best yearSeptember kWh/kWp/dayBest ÷ worst month
0°110889%2.541.9×
15°120797%2.691.6×
28° off-grid best1242100%2.711.5×
30°1243100%2.711.4×
31° year-round best1243100%2.701.4×
33° = latitude1242100%2.691.4×
45°121498%2.591.5×
60°112390%2.341.7×
70°103183%2.111.8×
90°79164%1.542.7×

A fixed array in Liangshui produces the most over a year at 31°. The design month for an off-grid system is September: at 28° it makes 2.71 kWh per kWp a day, and costs 0% of the yearly total. Why steep panels win winter.

Off-grid solar in Liangshui at 70°

Daily energy of 1 kWp by month. Bars: panels at 70°. Line: panels at 31° (year-round best).

012345January: 3.91 (70°)3.9JanFebruary: 3.32 (70°)3.3FebMarch: 3.04 (70°)3.0MarApril: 2.82 (70°)2.8AprMay: 2.44 (70°)2.4MayJune: 2.18 (70°)2.2JunJuly: 2.22 (70°)2.2JulAugust: 2.39 (70°)2.4AugSeptember: 2.11 (70°)2.1SepOctober: 2.42 (70°)2.4OctNovember: 3.18 (70°)3.2NovDecember: 3.88 (70°)3.9Dec31°
MonthSun hours, flatSun hours at 70°kWh/kWp/day at 70°at 31°Mean temp.
January snow2.674.283.913.47-2.9 °C
February snow3.053.683.323.390.0 °C
March3.763.443.043.654.6 °C
April4.543.272.823.9110.0 °C
May4.852.892.443.8114.0 °C
June4.742.632.183.5617.6 °C
July4.752.702.223.5819.6 °C
August4.342.882.393.4818.8 °C
September3.102.512.112.7014.3 °C
October2.752.802.422.739.0 °C
November2.613.573.183.123.5 °C
December snow2.534.263.883.45-1.7 °C
Year3.64 avg3.24 avg1031 kWh1243 kWh

Sizing example. To run a 1 kWh-per-day load through September on LiFePO4 batteries (charge controller, battery and inverter losses included) you need about 560 Wp of panels at 70°, versus 440 Wp at 31°. Here the lower tilt is the better winter choice — the sun stays high enough. Size your own system.

Row spacing in Liangshui

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.

3.9 mrow pitch at 70°

3.5 mrow pitch at 31°

Row spacing calculator

How Liangshui compares in China

Against the other 2,094 places in China with climate data, for a fixed array at its best angle.

1274thof 2,095 places in China for sunshine, shared: 3.65 peak sun hours a day on flat ground.

−1%solar energy a year compared with the average place in China: 1,243 against 1,262 kWh per kWp.

+11 mindaylight on the longest day, compared with Shanghai: 14 h 22 min against 14 h 11 min.

31°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); Liangshui ranks joint 1274th. In its darkest month, September, 1 kWp of off-grid panels at 70° makes 2.11 kWh a day here, against 2.06 kWh on average in China. The shortest day lasts 9 h 56 min, −11 min compared with Shanghai.

The sunniest places in China

Solar forecast for Liangshui, next 48 hours

Expected output of 1 kWp at 70°, computed from the ICON-EU weather model of the Deutscher Wetterdienst (DWD), Europe.

Loading the latest forecast…

Questions about the sun in Liangshui

What is the best solar panel angle in Liangshui?
For a fixed array facing south, the best year-round tilt in Liangshui is 31°, worth about 1243 kWh per kWp a year. An off-grid system that has to get through September does better at about 28°.
What time is sunrise and sunset in Liangshui today?
On 25 October 2026 the sun rises at 07:13 and sets at 18:16 local time (UTC+8), giving 11 h 03 min of daylight. Solar noon is at 12:44.
How many peak sun hours does Liangshui get?
On a flat surface 3.6 hours a day averaged over the year, from 2.5 in December to 4.8 in May. Panels tilted at 70° receive 2.5 sun hours a day in September.
How high does the sun get in Liangshui?
At solar noon the sun stands 80.0° above the horizon on the June solstice and 33.2° on the December solstice.
Is Liangshui a good place for solar panels?
With 3.6 peak sun hours a day on flat ground, Liangshui ranks joint 1274th of 2,095 places in China for sunshine. A 1 kWp array at the best angle (31°) makes about 1,243 kWh a year here, 1% less than the average place in China.

Places near Liangshui

All places in China

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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.