Gansu · China · 33.33° N · 105.60° E
Solar position in Zuitai
Sun position, daylight and the best solar panel angle for Zuitai — computed for 33.33° N, 105.60° E, 1181 m above sea level.
The sun right now
Sun in Zuitai today
Sunday, 25 October 2026 · local time UTC+8
| Event | Time | Direction / height |
|---|---|---|
| Astronomical dawn | 05:46 | sun 18° below horizon |
| Nautical dawn | 06:15 | 12° below |
| Civil dawn | 06:44 | 6° below |
| Sunrise | 07:09 | 104° ESE |
| Golden hour ends | 07:43 | sun 6° up |
| Solar noon | 12:41 | 44.6° high |
| Golden hour starts | 17:39 | sun 6° up |
| Sunset | 18:13 | 256° WSW |
| Civil dusk | 18:38 | 6° below |
| Nautical dusk | 19:07 | 12° below |
| Astronomical dusk | 19:36 | 18° below |
| Day length | 11 h 03 min | |
Sun path diagram for Zuitai
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 80.1° at solar noon in Zuitai; on the December solstice only 33.3°. Sunrise swings from 61° ENE in June to 118° ESE in December — a 57° 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 | 07:59 | 13:08 | 18:18 | 10 h 19 min | 36.8° |
| February | 07:35 | 13:11 | 18:47 | 11 h 12 min | 46.1° |
| March | 07:00 | 13:04 | 19:09 | 12 h 09 min | 56.9° |
| April | 06:20 | 12:56 | 19:32 | 13 h 12 min | 68.5° |
| May | 05:53 | 12:54 | 19:54 | 14 h 01 min | 76.9° |
| June | 05:48 | 12:59 | 20:10 | 14 h 22 min | 80.1° |
| July | 06:02 | 13:03 | 20:05 | 14 h 02 min | 77.1° |
| August | 06:24 | 13:00 | 19:37 | 13 h 13 min | 68.8° |
| September | 06:44 | 12:50 | 18:56 | 12 h 11 min | 57.4° |
| October | 07:06 | 12:42 | 18:17 | 11 h 11 min | 46.0° |
| November | 07:33 | 12:43 | 17:52 | 10 h 19 min | 36.8° |
| December | 07:57 | 12:55 | 17:53 | 9 h 57 min | 33.3° |
A year of daylight in Zuitai
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 Zuitai
Fixed array facing south (azimuth 180°). Energy per kWp from NASA POWER monthly climate, including clouds, temperature and snow reflection.
28°collects the most energy over a year: 1150 kWh per kWp.
38°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 | October kWh/kWp/day | Best ÷ worst month |
|---|---|---|---|---|
| 0° | 1043 | 91% | 2.05 | 2.2× |
| 15° | 1126 | 98% | 2.30 | 1.7× |
| 28° year-round best | 1150 | 100% | 2.42 | 1.6× |
| 30° | 1149 | 100% | 2.43 | 1.6× |
| 33° = latitude | 1147 | 100% | 2.45 | 1.6× |
| 38° off-grid best | 1137 | 99% | 2.45 | 1.5× |
| 45° | 1113 | 97% | 2.44 | 1.5× |
| 60° | 1018 | 89% | 2.31 | 1.5× |
| 70° | 927 | 81% | 2.15 | 1.6× |
| 90° | 695 | 60% | 1.70 | 2.3× |
A fixed array in Zuitai produces the most over a year at 28°. The design month for an off-grid system is October: at 38° it makes 2.45 kWh per kWp a day, 1% more than at 28°, and costs 1% of the yearly total. Why steep panels win winter.
Off-grid solar in Zuitai at 70°
Daily energy of 1 kWp by month. Bars: panels at 70°. Line: panels at 28° (year-round best).
| Month | Sun hours, flat | Sun hours at 70° | kWh/kWp/day at 70° | at 28° | Mean temp. |
|---|---|---|---|---|---|
| January snow | 2.34 | 3.47 | 3.14 | 2.86 | -0.9 °C |
| February | 2.68 | 3.00 | 2.67 | 2.85 | 1.9 °C |
| March | 3.58 | 3.26 | 2.85 | 3.43 | 7.0 °C |
| April | 4.49 | 3.23 | 2.76 | 3.86 | 12.6 °C |
| May | 4.89 | 2.90 | 2.43 | 3.86 | 16.8 °C |
| June | 4.79 | 2.62 | 2.14 | 3.61 | 20.6 °C |
| July | 4.67 | 2.63 | 2.14 | 3.53 | 22.6 °C |
| August | 4.24 | 2.80 | 2.30 | 3.39 | 21.6 °C |
| September | 2.94 | 2.37 | 1.98 | 2.54 | 16.9 °C |
| October | 2.50 | 2.52 | 2.15 | 2.42 | 11.5 °C |
| November | 2.28 | 3.01 | 2.66 | 2.59 | 5.6 °C |
| December snow | 2.21 | 3.59 | 3.24 | 2.83 | 0.1 °C |
| Year | 3.47 avg | 2.95 avg | 927 kWh | 1150 kWh |
Sizing example. To run a 1 kWh-per-day load through September on LiFePO4 batteries (charge controller, battery and inverter losses included) you need about 600 Wp of panels at 70°, versus 490 Wp at 28°. Here the lower tilt is the better winter choice — the sun stays high enough. Size your own system.
Row spacing in Zuitai
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.
3.9 mrow pitch at 70°
3.4 mrow pitch at 28°
How Zuitai compares in China
Against the other 2,094 places in China with climate data, for a fixed array at its best angle.
1461stof 2,095 places in China for sunshine, shared: 3.47 peak sun hours a day on flat ground.
−9%solar energy a year compared with the average place in China: 1,150 against 1,262 kWh per kWp.
+11 mindaylight on the longest day, compared with Shanghai: 14 h 22 min against 14 h 11 min.
28°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); Zuitai ranks joint 1461st. In its darkest month, September, 1 kWp of off-grid panels at 70° makes 1.98 kWh a day here, against 2.06 kWh on average in China. The shortest day lasts 9 h 57 min, −10 min compared with Shanghai.
Solar forecast for Zuitai, 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 Zuitai
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A free, live card for Zuitai: 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.