Solarposition.org

Chongqing · China · 31.95° N · 108.66° E

Solar position in Gecheng

Sun position, daylight and the best solar panel angle for Gecheng — computed for 31.95° N, 108.66° E, 761 m above sea level.

Sunrise today06:55104° ESE
Sunset today18:02256° WSW
Best panel angle25°year-round, facing south
Off-grid angle40°best for the darkest month

The sun right now

Azimuth180.0°
Elevation46.0°
At solar noon, 12:29Open on the sun map

Sun in Gecheng today

Sunday, 25 October 2026 · local time UTC+8

EventTimeDirection / height
Astronomical dawn05:34sun 18° below horizon
Nautical dawn06:0212° below
Civil dawn06:316° below
Sunrise06:55104° ESE
Golden hour ends07:29sun 6° up
Solar noon12:2946.0° high
Golden hour starts17:29sun 6° up
Sunset18:02256° WSW
Civil dusk18:276° below
Nautical dusk18:5612° below
Astronomical dusk19:2418° below
Day length11 h 07 min

Sun path diagram for Gecheng

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 81.5° at solar noon in Gecheng; on the December solstice only 34.6°. Sunrise swings from 61° ENE in June to 117° ESE in December — a 56° 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
January07:4412:5618:0810 h 24 min38.2°
February07:2112:5918:3611 h 15 min47.5°
March06:4812:5218:5712 h 09 min58.3°
April06:1012:4419:1813 h 08 min69.9°
May05:4412:4119:3913 h 55 min78.2°
June05:3912:4719:5414 h 15 min81.5°
July05:5312:5119:4913 h 56 min78.5°
August06:1312:4819:2313 h 09 min70.2°
September06:3212:3818:4312 h 11 min58.8°
October06:5212:2918:0611 h 14 min47.4°
November07:1812:3117:4310 h 24 min38.2°
December07:4112:4317:4510 h 04 min34.6°

A year of daylight in Gecheng

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 Gecheng

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

25°collects the most energy over a year: 1056 kWh per kWp.

40°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 25°Best worst-month 40°70°Yearly energyWorst-month energy
  • Yearly energy
  • Worst-month energy
TiltkWh/kWp per yearShare of best yearDecember kWh/kWp/dayBest ÷ worst month
0°98293%1.522.6×
15°104499%1.912.0×
25° year-round best1056100%2.111.8×
30°1052100%2.191.6×
32° = latitude104999%2.211.6×
40° off-grid best102697%2.301.5×
45°100495%2.341.5×
60°90586%2.351.3×
70°81577%2.281.3×
90°59256%1.971.6×

A fixed array in Gecheng produces the most over a year at 25°. The design month for an off-grid system is December: at 40° it makes 2.30 kWh per kWp a day, 9% more than at 25°, and costs 3% of the yearly total. Why steep panels win winter.

Off-grid solar in Gecheng at 70°

Daily energy of 1 kWp by month. Bars: panels at 70°. Line: panels at 25° (year-round best).

01234January: 2.24 (70°)2.2JanFebruary: 2.03 (70°)2.0FebMarch: 2.51 (70°)2.5MarApril: 2.45 (70°)2.5AprMay: 2.08 (70°)2.1MayJune: 2.00 (70°)2.0JunJuly: 2.18 (70°)2.2JulAugust: 2.42 (70°)2.4AugSeptember: 2.19 (70°)2.2SepOctober: 2.15 (70°)2.1OctNovember: 2.24 (70°)2.2NovDecember: 2.28 (70°)2.3Dec25°
MonthSun hours, flatSun hours at 70°kWh/kWp/day at 70°at 25°Mean temp.
January1.952.512.242.161.3 °C
February2.232.312.032.223.9 °C
March3.282.892.513.058.8 °C
April4.102.902.453.4914.1 °C
May4.252.522.083.3618.0 °C
June4.522.462.003.4321.9 °C
July4.862.692.183.7024.1 °C
August4.592.962.423.6723.4 °C
September3.292.642.192.8419.1 °C
October2.542.532.152.4213.7 °C
November2.062.572.242.208.0 °C
December1.832.572.282.112.4 °C
Year3.30 avg2.63 avg815 kWh1056 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 590 Wp of panels at 70°, versus 560 Wp at 25°. Here the lower tilt is the better winter choice — the sun stays high enough. Size your own system.

Row spacing in Gecheng

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.

3.8 mrow pitch at 70°

3.2 mrow pitch at 25°

Row spacing calculator

How Gecheng compares in China

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

1523rdof 2,095 places in China for sunshine, shared: 3.30 peak sun hours a day on flat ground.

−16%solar energy a year compared with the average place in China: 1,056 against 1,262 kWh per kWp.

+4 mindaylight on the longest day, compared with Shanghai: 14 h 15 min against 14 h 11 min.

25°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); Gecheng ranks joint 1523rd. In its darkest month, June, 1 kWp of off-grid panels at 70° makes 2.00 kWh a day here, against 2.06 kWh on average in China. The shortest day lasts 10 h 04 min, −4 min compared with Shanghai.

The sunniest places in China

Solar forecast for Gecheng, 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 Gecheng

What is the best solar panel angle in Gecheng?
For a fixed array facing south, the best year-round tilt in Gecheng is 25°, worth about 1056 kWh per kWp a year. An off-grid system that has to get through December does better at about 40°.
What time is sunrise and sunset in Gecheng today?
On 25 October 2026 the sun rises at 06:55 and sets at 18:02 local time (UTC+8), giving 11 h 07 min of daylight. Solar noon is at 12:29.
How many peak sun hours does Gecheng get?
On a flat surface 3.3 hours a day averaged over the year, from 1.8 in December to 4.9 in July. Panels tilted at 70° receive 2.5 sun hours a day in June.
How high does the sun get in Gecheng?
At solar noon the sun stands 81.5° above the horizon on the June solstice and 34.6° on the December solstice.
Is Gecheng a good place for solar panels?
With 3.3 peak sun hours a day on flat ground, Gecheng ranks joint 1523rd of 2,095 places in China for sunshine. A 1 kWp array at the best angle (25°) makes about 1,056 kWh a year here, 16% less than the average place in China.

Places near Gecheng

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.