Solarposition.org

Taiwan · Taiwan · 24.97° N · 121.26° E

Solar position in Neili

Sun position, daylight and the best solar panel angle for Neili — computed for 24.97° N, 121.26° E, 132 m above sea level.

Sunrise today05:58103° ESE
Sunset today17:19257° WSW
Best panel angle18°year-round, facing south
Off-grid angle43°best for the darkest month

The sun right now

Azimuth180.0°
Elevation53.0°
At solar noon, 11:38Open on the sun map

Sun in Neili today

Sunday, 25 October 2026 · local time UTC+8

EventTimeDirection / height
Astronomical dawn04:41sun 18° below horizon
Nautical dawn05:0712° below
Civil dawn05:346° below
Sunrise05:58103° ESE
Golden hour ends06:29sun 6° up
Solar noon11:3853.0° high
Golden hour starts16:48sun 6° up
Sunset17:19257° WSW
Civil dusk17:436° below
Nautical dusk18:0912° below
Astronomical dusk18:3618° below
Day length11 h 22 min

Sun path diagram for Neili

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 solstice6789101112131415161718EquinoxDecember solstice7891011121314151617Today
  • June solstice
  • Equinox
  • December solstice
  • Today

On the June solstice the sun reaches 88.5° at solar noon in Neili; on the December solstice only 41.6°. Sunrise swings from 64° ENE in June to 116° ESE in December — a 52° 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
January06:4112:0617:3110 h 50 min45.1°
February06:2412:0817:5211 h 28 min54.5°
March05:5812:0218:0612 h 08 min65.3°
April05:2711:5318:2012 h 52 min76.9°
May05:0811:5118:3513 h 27 min85.2°
June05:0511:5618:4713 h 41 min88.5°
July05:1712:0118:4513 h 28 min85.5°
August05:3111:5818:2412 h 53 min77.2°
September05:4311:4817:5212 h 10 min65.8°
October05:5511:3917:2311 h 27 min54.4°
November06:1511:4017:0510 h 50 min45.1°
December06:3511:5217:1010 h 35 min41.6°

A year of daylight in Neili

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 Neili

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

18°collects the most energy over a year: 1155 kWh per kWp.

43°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 18°Best worst-month 43°70°Yearly energyWorst-month energy
  • Yearly energy
  • Worst-month energy
TiltkWh/kWp per yearShare of best yearDecember kWh/kWp/dayBest ÷ worst month
0°111296%1.792.7×
15°1154100%2.102.2×
18° year-round best1155100%2.152.1×
25° = latitude114899%2.251.9×
30°113598%2.301.8×
43° off-grid best107093%2.371.5×
45°105691%2.371.5×
60°92480%2.311.4×
70°81170%2.201.5×
90°56049%1.821.9×

A fixed array in Neili produces the most over a year at 18°. The design month for an off-grid system is December: at 43° it makes 2.37 kWh per kWp a day, 10% more than at 18°, and costs 7% of the yearly total. Why steep panels win winter.

Off-grid solar in Neili at 70°

Daily energy of 1 kWp by month. Bars: panels at 70°. Line: panels at 18° (year-round best).

012345January: 2.16 (70°)2.2JanFebruary: 2.09 (70°)2.1FebMarch: 2.11 (70°)2.1MarApril: 1.99 (70°)2.0AprMay: 1.85 (70°)1.9MayJune: 1.85 (70°)1.9JunJuly: 2.11 (70°)2.1JulAugust: 2.42 (70°)2.4AugSeptember: 2.69 (70°)2.7SepOctober: 2.79 (70°)2.8OctNovember: 2.41 (70°)2.4NovDecember: 2.20 (70°)2.2Dec18°
MonthSun hours, flatSun hours at 70°kWh/kWp/day at 70°at 18°Mean temp.
January2.312.552.162.1815.7 °C
February2.632.492.092.3816.2 °C
March3.212.542.112.7617.8 °C
April3.762.421.993.0521.0 °C
May4.302.301.853.3423.9 °C
June4.942.321.853.7326.1 °C
July5.982.642.114.5027.4 °C
August5.433.012.424.2527.4 °C
September4.573.322.693.8026.1 °C
October3.713.392.793.2823.5 °C
November2.692.902.412.5020.9 °C
December2.242.622.202.1517.4 °C
Year3.82 avg2.71 avg811 kWh1155 kWh

Sizing example. To run a 1 kWh-per-day load through May on LiFePO4 batteries (charge controller, battery and inverter losses included) you need about 640 Wp of panels at 70°, versus 550 Wp at 18°. Here the lower tilt is the better winter choice — the sun stays high enough. Size your own system.

Row spacing in Neili

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.

3.1 mrow pitch at 70°

2.7 mrow pitch at 18°

Row spacing calculator

How Neili compares in Taiwan

Against the other 66 places in Taiwan with climate data, for a fixed array at its best angle.

53rdof 67 places in Taiwan for sunshine, shared: 3.82 peak sun hours a day on flat ground.

−8%solar energy a year compared with the average place in Taiwan: 1,155 against 1,256 kWh per kWp.

±0 mindaylight on the longest day, compared with Taipei: 13 h 41 min against 13 h 42 min.

18°best year-round tilt here; across Taiwan it runs from 17° in Keelung to 21° in Chiayi City.

Of the 67 places in Taiwan, Donggang and one other place get the most sun (4.59 peak sun hours a day) and Sanzhi the least (3.74); Neili ranks joint 53rd. In its darkest month, May, 1 kWp of off-grid panels at 70° makes 1.85 kWh a day here, against 1.85 kWh on average in Taiwan. The shortest day lasts 10 h 35 min, ±0 min compared with Taipei.

The sunniest places in Taiwan

Solar forecast for Neili, 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 Neili

What is the best solar panel angle in Neili?
For a fixed array facing south, the best year-round tilt in Neili is 18°, worth about 1155 kWh per kWp a year. An off-grid system that has to get through December does better at about 43°.
What time is sunrise and sunset in Neili today?
On 25 October 2026 the sun rises at 05:58 and sets at 17:19 local time (UTC+8), giving 11 h 22 min of daylight. Solar noon is at 11:38.
How many peak sun hours does Neili get?
On a flat surface 3.8 hours a day averaged over the year, from 2.2 in December to 6.0 in July. Panels tilted at 70° receive 2.3 sun hours a day in May.
How high does the sun get in Neili?
At solar noon the sun stands 88.5° above the horizon on the June solstice and 41.6° on the December solstice.
Is Neili a good place for solar panels?
With 3.8 peak sun hours a day on flat ground, Neili ranks joint 53rd of 67 places in Taiwan for sunshine. A 1 kWp array at the best angle (18°) makes about 1,155 kWh a year here, 8% less than the average place in Taiwan.

Places near Neili

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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.