Tottori · Japan · 35.50° N · 133.68° E
Solar position in Yabase
Sun position, daylight and the best solar panel angle for Yabase — computed for 35.50° N, 133.68° E, 11 m above sea level.
The sun right now
Sun in Yabase today
Sunday, 25 October 2026 · local time UTC+9
| Event | Time | Direction / height |
|---|---|---|
| Astronomical dawn | 04:54 | sun 18° below horizon |
| Nautical dawn | 05:24 | 12° below |
| Civil dawn | 05:54 | 6° below |
| Sunrise | 06:20 | 104° ESE |
| Golden hour ends | 06:55 | sun 6° up |
| Solar noon | 11:49 | 42.4° high |
| Golden hour starts | 16:43 | sun 6° up |
| Sunset | 17:18 | 256° WSW |
| Civil dusk | 17:44 | 6° below |
| Nautical dusk | 18:14 | 12° below |
| Astronomical dusk | 18:43 | 18° below |
| Day length | 10 h 58 min | |
Sun path diagram for Yabase
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 77.9° at solar noon in Yabase; on the December solstice only 31.1°. Sunrise swings from 60° ENE in June to 119° 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 | 07:11 | 12:16 | 17:21 | 10 h 09 min | 34.6° |
| February | 06:45 | 12:19 | 17:52 | 11 h 07 min | 43.9° |
| March | 06:08 | 12:12 | 18:17 | 12 h 09 min | 54.7° |
| April | 05:25 | 12:04 | 18:42 | 13 h 17 min | 66.3° |
| May | 04:56 | 12:01 | 19:07 | 14 h 11 min | 74.7° |
| June | 04:50 | 12:07 | 19:23 | 14 h 34 min | 77.9° |
| July | 05:05 | 12:11 | 19:17 | 14 h 13 min | 75.0° |
| August | 05:28 | 12:08 | 18:47 | 13 h 19 min | 66.6° |
| September | 05:52 | 11:58 | 18:04 | 12 h 12 min | 55.2° |
| October | 06:16 | 11:49 | 17:22 | 11 h 07 min | 43.9° |
| November | 06:46 | 11:50 | 16:55 | 10 h 09 min | 34.6° |
| December | 07:10 | 12:03 | 16:55 | 9 h 45 min | 31.1° |
A year of daylight in Yabase
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 Yabase
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: 1163 kWh per kWp.
56°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° | 1060 | 91% | 1.29 | 3.3× |
| 15° | 1142 | 98% | 1.62 | 2.7× |
| 28° year-round best | 1163 | 100% | 1.84 | 2.3× |
| 30° | 1162 | 100% | 1.87 | 2.2× |
| 36° = latitude | 1153 | 99% | 1.94 | 2.1× |
| 45° | 1121 | 96% | 2.01 | 1.9× |
| 56° off-grid best | 1053 | 91% | 2.04 | 1.7× |
| 60° | 1021 | 88% | 2.04 | 1.7× |
| 70° | 924 | 79% | 1.99 | 1.5× |
| 90° | 680 | 58% | 1.74 | 1.7× |
A fixed array in Yabase produces the most over a year at 28°. The design month for an off-grid system is December: at 56° it makes 2.04 kWh per kWp a day, 11% more than at 28°, and costs 9% of the yearly total. Why steep panels win winter.
Off-grid solar in Yabase 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 | 1.73 | 2.29 | 2.01 | 1.94 | 4.5 °C |
| February | 2.45 | 2.74 | 2.41 | 2.55 | 4.9 °C |
| March | 3.56 | 3.36 | 2.94 | 3.45 | 7.4 °C |
| April | 4.70 | 3.52 | 3.02 | 4.13 | 12.0 °C |
| May | 5.19 | 3.18 | 2.66 | 4.17 | 16.8 °C |
| June | 4.84 | 2.80 | 2.30 | 3.71 | 20.9 °C |
| July | 4.64 | 2.77 | 2.23 | 3.54 | 24.7 °C |
| August | 4.92 | 3.36 | 2.72 | 3.95 | 26.2 °C |
| September | 3.81 | 3.27 | 2.69 | 3.36 | 22.6 °C |
| October | 3.14 | 3.45 | 2.91 | 3.14 | 17.4 °C |
| November | 2.18 | 2.93 | 2.51 | 2.43 | 12.2 °C |
| December | 1.59 | 2.28 | 1.99 | 1.84 | 7.0 °C |
| Year | 3.57 avg | 3.00 avg | 924 kWh | 1163 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 590 Wp of panels at 70°, versus 640 Wp at 28°. The steep array is 7% smaller for the same winter. Size your own system.
Row spacing in Yabase
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°
3.5 mrow pitch at 28°
How Yabase compares in Japan
Against the other 1,215 places in Japan with climate data, for a fixed array at its best angle.
1033rdof 1,216 places in Japan for sunshine, shared: 3.57 peak sun hours a day on flat ground.
−9%solar energy a year compared with the average place in Japan: 1,163 against 1,284 kWh per kWp.
−1 mindaylight on the longest day, compared with Tokyo: 14 h 34 min against 14 h 35 min.
28°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); Yabase ranks joint 1033rd. In its darkest month, December, 1 kWp of off-grid panels at 70° makes 1.99 kWh a day here, against 2.14 kWh on average in Japan. The shortest day lasts 9 h 45 min, +1 min compared with Tokyo.
Solar forecast for Yabase, 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 Yabase
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Places near Yabase
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A free, live card for Yabase: 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.