Jilin · China · 41.72° N · 125.93° E
Solar position in Tonghua
Sun position, daylight and the best solar panel angle for Tonghua — computed for 41.72° N, 125.93° E, 375 m above sea level.
The sun right now
Sun in Tonghua today
Sunday, 25 October 2026 · local time UTC+8
| Event | Time | Direction / height |
|---|---|---|
| Astronomical dawn | 04:26 | sun 18° below horizon |
| Nautical dawn | 04:58 | 12° below |
| Civil dawn | 05:31 | 6° below |
| Sunrise | 05:59 | 105° ESE |
| Golden hour ends | 06:38 | sun 6° up |
| Solar noon | 11:20 | 36.2° high |
| Golden hour starts | 16:02 | sun 6° up |
| Sunset | 16:40 | 254° WSW |
| Civil dusk | 17:09 | 6° below |
| Nautical dusk | 17:41 | 12° below |
| Astronomical dusk | 18:13 | 18° below |
| Day length | 10 h 41 min | |
Sun path diagram for Tonghua
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 71.7° at solar noon in Tonghua; on the December solstice only 24.9°. Sunrise swings from 57° ENE in June to 121° ESE in December — a 64° 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 | 06:57 | 11:47 | 16:37 | 9 h 39 min | 28.4° |
| February | 06:23 | 11:50 | 17:16 | 10 h 52 min | 37.7° |
| March | 05:38 | 11:43 | 17:49 | 12 h 10 min | 48.5° |
| April | 04:47 | 11:35 | 18:23 | 13 h 35 min | 60.1° |
| May | 04:11 | 11:32 | 18:54 | 14 h 43 min | 68.5° |
| June | 04:01 | 11:38 | 19:14 | 15 h 13 min | 71.7° |
| July | 04:19 | 11:42 | 19:05 | 14 h 46 min | 68.8° |
| August | 04:50 | 11:39 | 18:27 | 13 h 37 min | 60.4° |
| September | 05:22 | 11:29 | 17:36 | 12 h 14 min | 49.0° |
| October | 05:54 | 11:20 | 16:46 | 10 h 52 min | 37.6° |
| November | 06:32 | 11:21 | 16:11 | 9 h 39 min | 28.4° |
| December | 06:59 | 11:34 | 16:08 | 9 h 09 min | 24.9° |
A year of daylight in Tonghua
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 Tonghua
Fixed array facing south (azimuth 180°). Energy per kWp from NASA POWER monthly climate, including clouds, temperature and snow reflection.
41°collects the most energy over a year: 1463 kWh per kWp.
45°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 | December kWh/kWp/day | Best ÷ worst month |
|---|---|---|---|---|
| 0° | 1176 | 80% | 1.61 | 2.8× |
| 15° | 1344 | 92% | 2.33 | 2.0× |
| 30° | 1441 | 98% | 2.94 | 1.6× |
| 41° year-round best | 1463 | 100% | 3.29 | 1.5× |
| 42° = latitude | 1463 | 100% | 3.32 | 1.5× |
| 45° off-grid best | 1461 | 100% | 3.39 | 1.5× |
| 60° | 1404 | 96% | 3.65 | 1.7× |
| 70° | 1325 | 91% | 3.72 | 1.9× |
| 90° | 1083 | 74% | 3.57 | 2.7× |
A fixed array in Tonghua produces the most over a year at 41°. The design month for an off-grid system is December: at 45° it makes 3.39 kWh per kWp a day, 3% more than at 41°, and costs 0% of the yearly total. Why steep panels win winter.
Off-grid solar in Tonghua at 70°
Daily energy of 1 kWp by month. Bars: panels at 70°. Line: panels at 41° (year-round best).
| Month | Sun hours, flat | Sun hours at 70° | kWh/kWp/day at 70° | at 41° | Mean temp. |
|---|---|---|---|---|---|
| January snow | 2.35 | 4.57 | 4.36 | 3.92 | -14.7 °C |
| February snow | 3.22 | 5.05 | 4.75 | 4.53 | -10.9 °C |
| March snow | 4.23 | 5.25 | 4.80 | 4.93 | -3.5 °C |
| April | 4.83 | 4.02 | 3.55 | 4.44 | 5.3 °C |
| May | 5.45 | 3.65 | 3.12 | 4.32 | 12.8 °C |
| June | 5.20 | 3.22 | 2.68 | 3.83 | 18.1 °C |
| July | 4.68 | 3.05 | 2.50 | 3.48 | 21.2 °C |
| August | 4.55 | 3.43 | 2.84 | 3.71 | 20.3 °C |
| September | 4.29 | 4.26 | 3.64 | 4.23 | 14.5 °C |
| October | 3.25 | 4.45 | 3.93 | 4.06 | 6.2 °C |
| November snow | 2.16 | 4.10 | 3.75 | 3.41 | -3.3 °C |
| December snow | 1.88 | 3.93 | 3.72 | 3.29 | -12.5 °C |
| Year | 3.84 avg | 4.08 avg | 1325 kWh | 1463 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 470 Wp of panels at 70°, versus 360 Wp at 41°. Here the lower tilt is the better winter choice — the sun stays high enough. Size your own system.
Row spacing in Tonghua
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.
5.4 mrow pitch at 70°
4.8 mrow pitch at 41°
How Tonghua compares in China
Against the other 2,094 places in China with climate data, for a fixed array at its best angle.
894thof 2,095 places in China for sunshine, shared: 3.84 peak sun hours a day on flat ground.
+16%solar energy a year compared with the average place in China: 1,463 against 1,262 kWh per kWp.
+1 h 02 mindaylight on the longest day, compared with Shanghai: 15 h 13 min against 14 h 11 min.
41°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); Tonghua ranks joint 894th. In its darkest month, July, 1 kWp of off-grid panels at 70° makes 2.50 kWh a day here, against 2.06 kWh on average in China. The shortest day lasts 9 h 09 min, −58 min compared with Shanghai.
Solar forecast for Tonghua, 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 Tonghua
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Places near Tonghua
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A free, live card for Tonghua: 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.