Gansu · China · 34.99° N · 102.91° E
Solar position in Hezuo
Sun position, daylight and the best solar panel angle for Hezuo — computed for 34.99° N, 102.91° E, 2898 m above sea level.
The sun right now
Sun in Hezuo today
Sunday, 25 October 2026 · local time UTC+8
| Event | Time | Direction / height |
|---|---|---|
| Astronomical dawn | 05:57 | sun 18° below horizon |
| Nautical dawn | 06:27 | 12° below |
| Civil dawn | 06:56 | 6° below |
| Sunrise | 07:22 | 104° ESE |
| Golden hour ends | 07:57 | sun 6° up |
| Solar noon | 12:52 | 42.9° high |
| Golden hour starts | 17:47 | sun 6° up |
| Sunset | 18:21 | 256° WSW |
| Civil dusk | 18:47 | 6° below |
| Nautical dusk | 19:17 | 12° below |
| Astronomical dusk | 19:46 | 18° below |
| Day length | 10 h 59 min | |
Sun path diagram for Hezuo
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 78.5° at solar noon in Hezuo; on the December solstice only 31.6°. Sunrise swings from 60° ENE in June to 118° ESE in December — a 58° 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 | 08:13 | 13:19 | 18:25 | 10 h 12 min | 35.1° |
| February | 07:48 | 13:22 | 18:56 | 11 h 08 min | 44.5° |
| March | 07:11 | 13:15 | 19:20 | 12 h 09 min | 55.3° |
| April | 06:29 | 13:07 | 19:45 | 13 h 16 min | 66.9° |
| May | 06:00 | 13:04 | 20:09 | 14 h 08 min | 75.2° |
| June | 05:54 | 13:10 | 20:25 | 14 h 31 min | 78.5° |
| July | 06:09 | 13:14 | 20:19 | 14 h 10 min | 75.5° |
| August | 06:32 | 13:11 | 19:49 | 13 h 17 min | 67.1° |
| September | 06:55 | 13:01 | 19:07 | 12 h 12 min | 55.7° |
| October | 07:19 | 12:52 | 18:26 | 11 h 07 min | 44.3° |
| November | 07:48 | 12:54 | 17:59 | 10 h 12 min | 35.1° |
| December | 08:12 | 13:06 | 18:00 | 9 h 48 min | 31.6° |
A year of daylight in Hezuo
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 Hezuo
Fixed array facing south (azimuth 180°). Energy per kWp from NASA POWER monthly climate, including clouds, temperature and snow reflection.
37°collects the most energy over a year: 1624 kWh per kWp.
28°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 | September kWh/kWp/day | Best ÷ worst month |
|---|---|---|---|---|
| 0° | 1374 | 85% | 3.39 | 1.8× |
| 15° | 1535 | 95% | 3.65 | 1.3× |
| 28° off-grid best | 1610 | 99% | 3.72 | 1.3× |
| 30° | 1615 | 99% | 3.72 | 1.3× |
| 35° = latitude | 1623 | 100% | 3.70 | 1.4× |
| 37° year-round best | 1624 | 100% | 3.68 | 1.4× |
| 45° | 1610 | 99% | 3.59 | 1.5× |
| 60° | 1521 | 94% | 3.27 | 1.8× |
| 70° | 1418 | 87% | 2.96 | 2.2× |
| 90° | 1130 | 70% | 2.15 | 3.4× |
A fixed array in Hezuo produces the most over a year at 37°. The design month for an off-grid system is September: at 28° it makes 3.72 kWh per kWp a day, 1% more than at 37°, and costs 1% of the yearly total. Why steep panels win winter.
Off-grid solar in Hezuo at 70°
Daily energy of 1 kWp by month. Bars: panels at 70°. Line: panels at 37° (year-round best).
| Month | Sun hours, flat | Sun hours at 70° | kWh/kWp/day at 70° | at 37° | Mean temp. |
|---|---|---|---|---|---|
| January snow | 3.20 | 5.78 | 5.37 | 4.84 | -7.9 °C |
| February snow | 3.93 | 5.58 | 5.13 | 4.98 | -4.7 °C |
| March snow | 4.80 | 4.96 | 4.49 | 5.02 | -0.6 °C |
| April | 5.42 | 3.97 | 3.51 | 4.73 | 4.3 °C |
| May | 5.55 | 3.31 | 2.87 | 4.31 | 8.2 °C |
| June | 5.43 | 2.99 | 2.55 | 3.99 | 11.8 °C |
| July | 5.51 | 3.08 | 2.61 | 4.07 | 13.9 °C |
| August | 5.10 | 3.39 | 2.89 | 4.10 | 13.2 °C |
| September | 4.03 | 3.40 | 2.96 | 3.68 | 9.0 °C |
| October | 3.67 | 4.15 | 3.70 | 4.05 | 3.6 °C |
| November snow | 3.33 | 5.49 | 5.00 | 4.72 | -1.9 °C |
| December snow | 3.04 | 6.06 | 5.61 | 4.92 | -6.9 °C |
| Year | 4.42 avg | 4.34 avg | 1418 kWh | 1624 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 460 Wp of panels at 70°, versus 320 Wp at 37°. Here the lower tilt is the better winter choice — the sun stays high enough. Size your own system.
Row spacing in Hezuo
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.
4.2 mrow pitch at 70°
3.8 mrow pitch at 37°
How Hezuo compares in China
Against the other 2,094 places in China with climate data, for a fixed array at its best angle.
255thof 2,095 places in China for sunshine, shared: 4.42 peak sun hours a day on flat ground.
+29%solar energy a year compared with the average place in China: 1,624 against 1,262 kWh per kWp.
+20 mindaylight on the longest day, compared with Shanghai: 14 h 31 min against 14 h 11 min.
37°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); Hezuo ranks joint 255th. In its darkest month, June, 1 kWp of off-grid panels at 70° makes 2.55 kWh a day here, against 2.06 kWh on average in China. The shortest day lasts 9 h 48 min, −19 min compared with Shanghai.
Solar forecast for Hezuo, 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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A free, live card for Hezuo: 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.