Hokkaido · Japan · 42.33° N · 142.37° E
Solar position in Shizunai-furukawachō
Sun position, daylight and the best solar panel angle for Shizunai-furukawachō — computed for 42.33° N, 142.37° E, 4 m above sea level.
The sun right now
Sun in Shizunai-furukawachō today
Sunday, 25 October 2026 · local time UTC+9
| Event | Time | Direction / height |
|---|---|---|
| Astronomical dawn | 04:20 | sun 18° below horizon |
| Nautical dawn | 04:53 | 12° below |
| Civil dawn | 05:25 | 6° below |
| Sunrise | 05:54 | 106° ESE |
| Golden hour ends | 06:33 | sun 6° up |
| Solar noon | 11:14 | 35.6° high |
| Golden hour starts | 15:55 | sun 6° up |
| Sunset | 16:34 | 254° WSW |
| Civil dusk | 17:02 | 6° below |
| Nautical dusk | 17:35 | 12° below |
| Astronomical dusk | 18:08 | 18° below |
| Day length | 10 h 40 min | |
Sun path diagram for Shizunai-furukawachō
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 71.1° at solar noon in Shizunai-furukawachō; on the December solstice only 24.3°. Sunrise swings from 57° ENE in June to 122° ESE in December — a 65° 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 | 06:53 | 11:41 | 16:29 | 9 h 36 min | 27.8° |
| February | 06:19 | 11:44 | 17:09 | 10 h 51 min | 37.1° |
| March | 05:33 | 11:38 | 17:43 | 12 h 10 min | 47.9° |
| April | 04:41 | 11:29 | 18:18 | 13 h 37 min | 59.5° |
| May | 04:04 | 11:27 | 18:50 | 14 h 47 min | 67.8° |
| June | 03:53 | 11:32 | 19:10 | 15 h 17 min | 71.1° |
| July | 04:11 | 11:36 | 19:01 | 14 h 49 min | 68.2° |
| August | 04:43 | 11:33 | 18:23 | 13 h 40 min | 59.8° |
| September | 05:16 | 11:23 | 17:30 | 12 h 14 min | 48.4° |
| October | 05:49 | 11:14 | 16:40 | 10 h 50 min | 37.0° |
| November | 06:27 | 11:16 | 16:04 | 9 h 36 min | 27.8° |
| December | 06:56 | 11:28 | 16:00 | 9 h 05 min | 24.3° |
A year of daylight in Shizunai-furukawachō
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 Shizunai-furukawachō
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: 1251 kWh per kWp.
68°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° | 1047 | 84% | 1.13 | 3.8× |
| 15° | 1176 | 94% | 1.62 | 2.8× |
| 30° | 1243 | 99% | 2.01 | 2.2× |
| 37° year-round best | 1251 | 100% | 2.16 | 2.0× |
| 42° = latitude | 1248 | 100% | 2.24 | 1.9× |
| 45° | 1243 | 99% | 2.29 | 1.8× |
| 60° | 1176 | 94% | 2.43 | 1.6× |
| 68° off-grid best | 1115 | 89% | 2.45 | 1.6× |
| 70° | 1097 | 88% | 2.45 | 1.6× |
| 90° | 870 | 70% | 2.29 | 2.0× |
A fixed array in Shizunai-furukawachō produces the most over a year at 37°. The design month for an off-grid system is December: at 68° it makes 2.45 kWh per kWp a day, 14% more than at 37°, and costs 11% of the yearly total. Why steep panels win winter.
Off-grid solar in Shizunai-furukawachō 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 | 1.71 | 3.30 | 3.03 | 2.63 | -4.2 °C |
| February snow | 2.52 | 3.85 | 3.53 | 3.31 | -4.3 °C |
| March snow | 3.65 | 4.21 | 3.82 | 4.06 | -1.0 °C |
| April | 4.64 | 3.89 | 3.45 | 4.34 | 3.8 °C |
| May | 5.11 | 3.49 | 3.02 | 4.23 | 9.0 °C |
| June | 5.03 | 3.15 | 2.67 | 3.90 | 13.6 °C |
| July | 4.63 | 3.04 | 2.53 | 3.60 | 17.7 °C |
| August | 4.22 | 3.22 | 2.67 | 3.51 | 19.7 °C |
| September | 3.79 | 3.71 | 3.13 | 3.65 | 17.1 °C |
| October | 2.83 | 3.71 | 3.20 | 3.30 | 11.4 °C |
| November | 1.79 | 2.99 | 2.64 | 2.48 | 5.1 °C |
| December snow | 1.40 | 2.71 | 2.45 | 2.16 | -1.3 °C |
| Year | 3.45 avg | 3.44 avg | 1097 kWh | 1251 kWh |
Sizing example. To run a 1 kWh-per-day load through December on LiFePO4 batteries (charge controller, battery and inverter losses included) you need about 480 Wp of panels at 70°, versus 550 Wp at 37°. The steep array is 12% smaller for the same winter. Size your own system.
Row spacing in Shizunai-furukawachō
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.
5.6 mrow pitch at 70°
4.7 mrow pitch at 37°
How Shizunai-furukawachō compares in Japan
Against the other 1,215 places in Japan with climate data, for a fixed array at its best angle.
1116thof 1,216 places in Japan for sunshine, shared: 3.45 peak sun hours a day on flat ground.
−3%solar energy a year compared with the average place in Japan: 1,252 against 1,284 kWh per kWp.
+42 mindaylight on the longest day, compared with Tokyo: 15 h 17 min against 14 h 35 min.
37°best year-round tilt here; across Japan it runs from 17° in Miyakojima to 41° in Kushiro.
Of the 1,216 places in Japan, Miyakojima gets the most sun (4.34 peak sun hours a day) and Wakkanai and one other place the least (3.17); Shizunai-furukawachō ranks joint 1116th. In its darkest month, December, 1 kWp of off-grid panels at 70° makes 2.45 kWh a day here, against 2.14 kWh on average in Japan. The shortest day lasts 9 h 05 min, −40 min compared with Tokyo.
Solar forecast for Shizunai-furukawachō, 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 Shizunai-furukawachō: 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.