Solarposition.org

Chongqing · China · 28.78° N · 108.55° E

Solar position in Dingshi

Sun position, daylight and the best solar panel angle for Dingshi — computed for 28.78° N, 108.55° E, 561 m above sea level.

Sunrise today06:52103° ESE
Sunset today18:06257° WSW
Best panel angle20°year-round, facing south
Off-grid angle43°best for the darkest month

The sun right now

Azimuth180.0°
Elevation49.1°
At solar noon, 12:29Open on the sun map

Sun in Dingshi today

Sunday, 25 October 2026 · local time UTC+8

EventTimeDirection / height
Astronomical dawn05:33sun 18° below horizon
Nautical dawn06:0112° below
Civil dawn06:286° below
Sunrise06:52103° ESE
Golden hour ends07:25sun 6° up
Solar noon12:2949.1° high
Golden hour starts17:34sun 6° up
Sunset18:06257° WSW
Civil dusk18:306° below
Nautical dusk18:5812° below
Astronomical dusk19:2518° below
Day length11 h 14 min

Sun path diagram for Dingshi

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 solstice678910111213141516171819EquinoxDecember solstice891011121314151617Today
  • June solstice
  • Equinox
  • December solstice
  • Today

On the June solstice the sun reaches 84.7° at solar noon in Dingshi; on the December solstice only 37.8°. Sunrise swings from 62° ENE in June to 116° ESE in December — a 54° 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
January07:3812:5718:1510 h 37 min41.3°
February07:1912:5918:3911 h 21 min50.7°
March06:4912:5318:5712 h 08 min61.5°
April06:1412:4419:1513 h 01 min73.1°
May05:5112:4219:3313 h 41 min81.4°
June05:4812:4719:4613 h 59 min84.7°
July06:0012:5219:4313 h 43 min81.7°
August06:1712:4819:1913 h 02 min73.3°
September06:3312:3818:4412 h 10 min61.9°
October06:5012:3018:1011 h 20 min50.5°
November07:1312:3117:4910 h 37 min41.3°
December07:3412:4317:5210 h 19 min37.8°

A year of daylight in Dingshi

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 Dingshi

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

20°collects the most energy over a year: 908 kWh per kWp.

43°gives the most in the darkest month — the one an off-grid system is sized for.

50%60%70%80%90%100%0°10°20°30°40°50°60°70°80°90°Best year-round 20°Best worst-month 43°70°Yearly energyWorst-month energy
  • Yearly energy
  • Worst-month energy
TiltkWh/kWp per yearShare of best yearJanuary kWh/kWp/dayBest ÷ worst month
0°86996%1.302.9×
15°906100%1.492.5×
20° year-round best908100%1.542.4×
29° = latitude89999%1.612.2×
30°89799%1.612.2×
43° off-grid best85394%1.652.0×
45°84393%1.651.9×
60°74982%1.591.7×
70°66773%1.511.5×
90°47552%1.251.5×

A fixed array in Dingshi produces the most over a year at 20°. The design month for an off-grid system is January: at 43° it makes 1.65 kWh per kWp a day, 7% more than at 20°, and costs 6% of the yearly total. Why steep panels win winter.

Off-grid solar in Dingshi at 70°

Daily energy of 1 kWp by month. Bars: panels at 70°. Line: panels at 20° (year-round best).

01234January: 1.51 (70°)1.5JanFebruary: 1.56 (70°)1.6FebMarch: 1.88 (70°)1.9MarApril: 1.90 (70°)1.9AprMay: 1.69 (70°)1.7MayJune: 1.63 (70°)1.6JunJuly: 2.05 (70°)2.0JulAugust: 2.31 (70°)2.3AugSeptember: 2.11 (70°)2.1SepOctober: 1.78 (70°)1.8OctNovember: 1.86 (70°)1.9NovDecember: 1.62 (70°)1.6Dec20°
MonthSun hours, flatSun hours at 70°kWh/kWp/day at 70°at 20°Mean temp.
January1.571.731.511.542.4 °C
February1.901.801.561.765.2 °C
March2.682.201.882.389.9 °C
April3.352.281.902.7915.4 °C
May3.592.071.692.8319.4 °C
June3.732.031.632.8622.4 °C
July4.702.542.053.6124.6 °C
August4.582.832.313.6524.0 °C
September3.362.562.112.8420.4 °C
October2.302.131.782.0715.3 °C
November1.932.171.861.8910.0 °C
December1.551.861.621.574.0 °C
Year2.94 avg2.18 avg667 kWh908 kWh

Sizing example. To run a 1 kWh-per-day load through January on LiFePO4 batteries (charge controller, battery and inverter losses included) you need about 780 Wp of panels at 70°, versus 760 Wp at 20°. Here the lower tilt is the better winter choice — the sun stays high enough. Size your own system.

Row spacing in Dingshi

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.

3.4 mrow pitch at 70°

2.9 mrow pitch at 20°

Row spacing calculator

How Dingshi compares in China

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

2064thof 2,095 places in China for sunshine, shared: 2.94 peak sun hours a day on flat ground.

−28%solar energy a year compared with the average place in China: 908 against 1,262 kWh per kWp.

−12 mindaylight on the longest day, compared with Shanghai: 13 h 59 min against 14 h 11 min.

20°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); Dingshi ranks joint 2064th. In its darkest month, January, 1 kWp of off-grid panels at 70° makes 1.51 kWh a day here, against 2.06 kWh on average in China. The shortest day lasts 10 h 19 min, +11 min compared with Shanghai.

The sunniest places in China

Solar forecast for Dingshi, 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 Dingshi

What is the best solar panel angle in Dingshi?
For a fixed array facing south, the best year-round tilt in Dingshi is 20°, worth about 908 kWh per kWp a year. An off-grid system that has to get through January does better at about 43°.
What time is sunrise and sunset in Dingshi today?
On 25 October 2026 the sun rises at 06:52 and sets at 18:06 local time (UTC+8), giving 11 h 14 min of daylight. Solar noon is at 12:29.
How many peak sun hours does Dingshi get?
On a flat surface 2.9 hours a day averaged over the year, from 1.6 in December to 4.7 in July. Panels tilted at 70° receive 1.7 sun hours a day in January.
How high does the sun get in Dingshi?
At solar noon the sun stands 84.7° above the horizon on the June solstice and 37.8° on the December solstice.
Is Dingshi a good place for solar panels?
With 2.9 peak sun hours a day on flat ground, Dingshi ranks joint 2064th of 2,095 places in China for sunshine. A 1 kWp array at the best angle (20°) makes about 908 kWh a year here, 28% less than the average place in China.

Places near Dingshi

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.