Solarposition.org

Sichuan · China · 28.58° N · 104.92° E

Solar position in Changning

Sun position, daylight and the best solar panel angle for Changning — computed for 28.58° N, 104.92° E, 264 m above sea level.

Sunrise today07:07103° ESE
Sunset today18:21257° WSW
Best panel angle19°year-round, facing south
Off-grid angle45°best for the darkest month

The sun right now

Azimuth180.0°
Elevation49.3°
At solar noon, 12:44Open on the sun map

Sun in Changning today

Sunday, 25 October 2026 · local time UTC+8

EventTimeDirection / height
Astronomical dawn05:47sun 18° below horizon
Nautical dawn06:1512° below
Civil dawn06:436° below
Sunrise07:07103° ESE
Golden hour ends07:39sun 6° up
Solar noon12:4449.3° high
Golden hour starts17:49sun 6° up
Sunset18:21257° WSW
Civil dusk18:456° below
Nautical dusk19:1312° below
Astronomical dusk19:4018° below
Day length11 h 14 min

Sun path diagram for Changning

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 solstice78910111213141516171819EquinoxDecember solstice89101112131415161718Today
  • June solstice
  • Equinox
  • December solstice
  • Today

On the June solstice the sun reaches 84.9° at solar noon in Changning; on the December solstice only 38.0°. Sunrise swings from 63° 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
January07:5213:1118:3010 h 37 min41.5°
February07:3313:1418:5411 h 21 min50.9°
March07:0313:0719:1112 h 08 min61.7°
April06:2912:5919:2913 h 00 min73.3°
May06:0612:5619:4713 h 41 min81.6°
June06:0313:0220:0113 h 58 min84.9°
July06:1513:0619:5713 h 42 min81.9°
August06:3213:0319:3413 h 01 min73.5°
September06:4812:5318:5812 h 10 min62.1°
October07:0412:4418:2511 h 20 min50.7°
November07:2712:4518:0410 h 37 min41.5°
December07:4812:5818:0710 h 19 min38.0°

A year of daylight in Changning

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 Changning

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

19°collects the most energy over a year: 941 kWh per kWp.

45°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 19°Best worst-month 45°70°Yearly energyWorst-month energy
  • Yearly energy
  • Worst-month energy
TiltkWh/kWp per yearShare of best yearDecember kWh/kWp/dayBest ÷ worst month
0°90496%1.223.1×
15°940100%1.422.6×
19° year-round best941100%1.462.5×
29° = latitude93099%1.532.3×
30°92899%1.542.3×
45° off-grid best87092%1.582.0×
60°76882%1.541.7×
70°68172%1.471.5×
90°48051%1.231.6×

A fixed array in Changning produces the most over a year at 19°. The design month for an off-grid system is December: at 45° it makes 1.58 kWh per kWp a day, 9% more than at 19°, and costs 8% of the yearly total. Why steep panels win winter.

Off-grid solar in Changning at 70°

Daily energy of 1 kWp by month. Bars: panels at 70°. Line: panels at 19° (year-round best).

01234January: 1.63 (70°)1.6JanFebruary: 1.96 (70°)2.0FebMarch: 2.18 (70°)2.2MarApril: 2.17 (70°)2.2AprMay: 1.87 (70°)1.9MayJune: 1.62 (70°)1.6JunJuly: 2.03 (70°)2.0JulAugust: 2.27 (70°)2.3AugSeptember: 1.93 (70°)1.9SepOctober: 1.57 (70°)1.6OctNovember: 1.72 (70°)1.7NovDecember: 1.47 (70°)1.5Dec19°
MonthSun hours, flatSun hours at 70°kWh/kWp/day at 70°at 19°Mean temp.
January1.711.871.631.655.5 °C
February2.332.281.962.188.5 °C
March3.102.582.182.7513.5 °C
April3.872.622.173.2118.4 °C
May4.062.301.873.1921.9 °C
June3.852.031.622.9424.4 °C
July4.812.542.033.6826.7 °C
August4.602.822.273.6526.1 °C
September3.122.361.932.5922.4 °C
October2.111.891.571.8517.4 °C
November1.892.021.721.7812.3 °C
December1.501.701.471.466.7 °C
Year3.08 avg2.25 avg681 kWh941 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 800 Wp of panels at 70°, versus 810 Wp at 19°. The steep array is 1% smaller for the same winter. Size your own system.

Row spacing in Changning

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°

2.8 mrow pitch at 19°

Row spacing calculator

How Changning compares in China

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

1727thof 2,095 places in China for sunshine, shared: 3.08 peak sun hours a day on flat ground.

−25%solar energy a year compared with the average place in China: 942 against 1,262 kWh per kWp.

−13 mindaylight on the longest day, compared with Shanghai: 13 h 58 min against 14 h 11 min.

19°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); Changning ranks joint 1727th. In its darkest month, December, 1 kWp of off-grid panels at 70° makes 1.47 kWh a day here, against 2.06 kWh on average in China. The shortest day lasts 10 h 19 min, +12 min compared with Shanghai.

The sunniest places in China

Solar forecast for Changning, 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 Changning

What is the best solar panel angle in Changning?
For a fixed array facing south, the best year-round tilt in Changning is 19°, worth about 941 kWh per kWp a year. An off-grid system that has to get through December does better at about 45°.
What time is sunrise and sunset in Changning today?
On 25 October 2026 the sun rises at 07:07 and sets at 18:21 local time (UTC+8), giving 11 h 14 min of daylight. Solar noon is at 12:44.
How many peak sun hours does Changning get?
On a flat surface 3.1 hours a day averaged over the year, from 1.5 in December to 4.8 in July. Panels tilted at 70° receive 1.7 sun hours a day in December.
How high does the sun get in Changning?
At solar noon the sun stands 84.9° above the horizon on the June solstice and 38.0° on the December solstice.
Is Changning a good place for solar panels?
With 3.1 peak sun hours a day on flat ground, Changning ranks joint 1727th of 2,095 places in China for sunshine. A 1 kWp array at the best angle (19°) makes about 942 kWh a year here, 25% less than the average place in China.

Places near Changning

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.