Yunnan · China · 23.00° N · 100.11° E
Solar position in Dashan
Sun position, daylight and the best solar panel angle for Dashan — computed for 23.00° N, 100.11° E, 1618 m above sea level.
The sun right now
Sun in Dashan today
Sunday, 25 October 2026 · local time UTC+8
| Event | Time | Direction / height |
|---|---|---|
| Astronomical dawn | 06:05 | sun 18° below horizon |
| Nautical dawn | 06:31 | 12° below |
| Civil dawn | 06:57 | 6° below |
| Sunrise | 07:20 | 103° ESE |
| Golden hour ends | 07:51 | sun 6° up |
| Solar noon | 13:03 | 54.9° high |
| Golden hour starts | 18:15 | sun 6° up |
| Sunset | 18:46 | 257° WSW |
| Civil dusk | 19:09 | 6° below |
| Nautical dusk | 19:35 | 12° below |
| Astronomical dusk | 20:01 | 18° below |
| Day length | 11 h 26 min | |
Sun path diagram for Dashan
Where the sun stands in the sky: the centre is straight overhead, the outer ring is the horizon. Numbers mark local clock hours.
- June solstice
- Equinox
- December solstice
- Today
On the June solstice the sun reaches 89.6° at solar noon in Dashan; on the December solstice only 43.6°. Sunrise swings from 64° ENE in June to 115° ESE in December — a 51° 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.
| Month | Sunrise | Solar noon | Sunset | Day length | Noon elevation |
|---|---|---|---|---|---|
| January | 08:02 | 13:30 | 18:59 | 10 h 57 min | 47.1° |
| February | 07:47 | 13:33 | 19:18 | 11 h 31 min | 56.5° |
| March | 07:22 | 13:26 | 19:30 | 12 h 08 min | 67.2° |
| April | 06:54 | 13:18 | 19:42 | 12 h 48 min | 78.9° |
| May | 06:36 | 13:16 | 19:56 | 13 h 20 min | 87.2° |
| June | 06:34 | 13:21 | 20:07 | 13 h 33 min | 89.6° |
| July | 06:45 | 13:25 | 20:06 | 13 h 21 min | 87.5° |
| August | 06:58 | 13:22 | 19:47 | 12 h 49 min | 79.1° |
| September | 07:07 | 13:12 | 19:17 | 12 h 09 min | 67.7° |
| October | 07:18 | 13:04 | 18:49 | 11 h 30 min | 56.3° |
| November | 07:36 | 13:05 | 18:33 | 10 h 57 min | 47.1° |
| December | 07:55 | 13:17 | 18:39 | 10 h 43 min | 43.6° |
A year of daylight in Dashan
Each column is one day of 2026. Bright: sun above the horizon; soft: civil twilight; line: solar noon. Steps are daylight saving time changes.
Best solar panel angle in Dashan
Fixed array facing south (azimuth 180°). Energy per kWp from NASA POWER monthly climate, including clouds, temperature and snow reflection.
26°collects the most energy over a year: 1484 kWh per kWp.
4°gives the most in the darkest month — the one an off-grid system is sized for.
- Yearly energy
- Worst-month energy
| Tilt | kWh/kWp per year | Share of best year | July kWh/kWp/day | Best ÷ worst month |
|---|---|---|---|---|
| 0° | 1362 | 92% | 3.26 | 1.5× |
| 4° off-grid best | 1396 | 94% | 3.25 | 1.4× |
| 15° | 1462 | 99% | 3.17 | 1.6× |
| 23° = latitude | 1482 | 100% | 3.07 | 1.7× |
| 26° year-round best | 1484 | 100% | 3.02 | 1.8× |
| 30° | 1481 | 100% | 2.95 | 1.8× |
| 45° | 1420 | 96% | 2.59 | 2.1× |
| 60° | 1283 | 86% | 2.14 | 2.4× |
| 70° | 1154 | 78% | 1.81 | 2.7× |
| 90° | 841 | 57% | 1.23 | 3.3× |
A fixed array in Dashan produces the most over a year at 26°. The design month for an off-grid system is July: at 4° it makes 3.25 kWh per kWp a day, 8% more than at 26°, and costs 6% of the yearly total. Why steep panels win winter.
Off-grid solar in Dashan at 70°
Daily energy of 1 kWp by month. Bars: panels at 70°. Line: panels at 26° (year-round best).
| Month | Sun hours, flat | Sun hours at 70° | kWh/kWp/day at 70° | at 26° | Mean temp. |
|---|---|---|---|---|---|
| January | 4.29 | 5.67 | 4.89 | 4.81 | 12.7 °C |
| February | 5.23 | 5.60 | 4.78 | 5.31 | 15.1 °C |
| March | 5.48 | 4.35 | 3.66 | 4.86 | 18.3 °C |
| April | 5.65 | 3.34 | 2.76 | 4.47 | 21.4 °C |
| May | 5.33 | 2.62 | 2.14 | 3.94 | 22.5 °C |
| June | 4.59 | 2.35 | 1.90 | 3.35 | 22.6 °C |
| July | 4.08 | 2.23 | 1.81 | 3.02 | 22.0 °C |
| August | 4.35 | 2.58 | 2.11 | 3.34 | 21.9 °C |
| September | 4.35 | 3.06 | 2.53 | 3.56 | 21.1 °C |
| October | 4.06 | 3.59 | 3.01 | 3.68 | 18.9 °C |
| November | 4.11 | 4.88 | 4.16 | 4.32 | 15.7 °C |
| December | 3.75 | 5.01 | 4.32 | 4.20 | 12.8 °C |
| Year | 4.60 avg | 3.76 avg | 1154 kWh | 1484 kWh |
Sizing example. To run a 1 kWh-per-day load through July on LiFePO4 batteries (charge controller, battery and inverter losses included) you need about 650 Wp of panels at 70°, versus 390 Wp at 26°. Here the lower tilt is the better winter choice — the sun stays high enough. Size your own system.
Row spacing in Dashan
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.
2.9 mrow pitch at 70°
2.8 mrow pitch at 26°
How Dashan compares in China
Against the other 2,094 places in China with climate data, for a fixed array at its best angle.
186thof 2,095 places in China for sunshine, shared: 4.60 peak sun hours a day on flat ground.
+18%solar energy a year compared with the average place in China: 1,484 against 1,262 kWh per kWp.
−38 mindaylight on the longest day, compared with Shanghai: 13 h 33 min against 14 h 11 min.
26°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); Dashan ranks joint 186th. In its darkest month, July, 1 kWp of off-grid panels at 70° makes 1.81 kWh a day here, against 2.06 kWh on average in China. The shortest day lasts 10 h 43 min, +36 min compared with Shanghai.
Solar forecast for Dashan, next 48 hours
Expected output of 1 kWp at 70°, computed from the ICON-EU weather model of the Deutscher Wetterdienst (DWD), Europe.
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Questions about the sun in Dashan
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Places near Dashan
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A free, live card for Dashan: where the sun is right now on today's path, a countdown to sunset or sunrise, the daylight change, the moon phase at night and the best panel angle.
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.