Solarposition.org

Saga · Japan · 33.27° N · 129.88° E

Solar position in Imarichō-kō

Sun position, daylight and the best solar panel angle for Imarichō-kō — computed for 33.27° N, 129.88° E, 5 m above sea level.

Sunrise today06:32104° ESE
Sunset today17:36256° WSW
Best panel angle27°year-round, facing south
Off-grid angle55°best for the darkest month

The sun right now

Azimuth180.0°
Elevation44.7°
At solar noon, 12:04Open on the sun map

Sun in Imarichō-kō today

Sunday, 25 October 2026 · local time UTC+9

EventTimeDirection / height
Astronomical dawn05:09sun 18° below horizon
Nautical dawn05:3812° below
Civil dawn06:076° below
Sunrise06:32104° ESE
Golden hour ends07:06sun 6° up
Solar noon12:0444.7° high
Golden hour starts17:02sun 6° up
Sunset17:36256° WSW
Civil dusk18:016° below
Nautical dusk18:3012° below
Astronomical dusk18:5918° below
Day length11 h 04 min

Sun path diagram for Imarichō-kō

Where the sun stands in the sky: the centre is straight overhead, the outer ring is the horizon. Numbers mark local clock hours.

15°30°45°60°75°N30°60°E120°150°S210°240°W300°330°June solstice678910111213141516171819EquinoxDecember solstice891011121314151617Today
  • June solstice
  • Equinox
  • December solstice
  • Today

On the June solstice the sun reaches 80.2° at solar noon in Imarichō-kō; 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.

MonthSunriseSolar noonSunsetDay lengthNoon elevation
January07:2212:3117:4110 h 19 min36.8°
February06:5812:3418:1011 h 12 min46.2°
March06:2312:2718:3212 h 09 min56.9°
April05:4312:1918:5513 h 11 min68.6°
May05:1712:1719:1714 h 00 min76.9°
June05:1112:2219:3214 h 21 min80.2°
July05:2512:2619:2714 h 02 min77.2°
August05:4712:2318:5913 h 13 min68.9°
September06:0712:1318:1912 h 12 min57.5°
October06:2912:0417:4011 h 11 min46.1°
November06:5612:0617:1510 h 19 min36.9°
December07:1912:1817:169 h 57 min33.3°

A year of daylight in Imarichō-kō

Each column is one day of 2026. Bright: sun above the horizon; soft: civil twilight; line: solar noon. Steps are daylight saving time changes.

00:0003:0006:0009:0012:0015:0018:0021:0000:00JanFebMarAprMayJunJulAugSepOctNovDec

Best solar panel angle in Imarichō-kō

Fixed array facing south (azimuth 180°). Energy per kWp from NASA POWER monthly climate, including clouds, temperature and snow reflection.

27°collects the most energy over a year: 1247 kWh per kWp.

55°gives the most in the darkest month — the one an off-grid system is sized for.

50%60%70%80%90%100%0°10°20°30°40°50°60°70°80°90°Best year-round 27°Best worst-month 55°70°Yearly energyWorst-month energy
  • Yearly energy
  • Worst-month energy
TiltkWh/kWp per yearShare of best yearDecember kWh/kWp/dayBest ÷ worst month
0°113591%1.602.7×
15°122498%2.012.1×
27° year-round best1247100%2.261.8×
30°1246100%2.311.8×
33° = latitude1243100%2.361.7×
45°120196%2.481.6×
55° off-grid best113591%2.511.4×
60°109288%2.501.4×
70°98779%2.431.5×
90°72258%2.112.0×

A fixed array in Imarichō-kō produces the most over a year at 27°. The design month for an off-grid system is December: at 55° it makes 2.51 kWh per kWp a day, 11% more than at 27°, and costs 9% of the yearly total. Why steep panels win winter.

Off-grid solar in Imarichō-kō at 70°

Daily energy of 1 kWp by month. Bars: panels at 70°. Line: panels at 27° (year-round best).

012345January: 2.45 (70°)2.4JanFebruary: 2.85 (70°)2.9FebMarch: 3.16 (70°)3.2MarApril: 2.95 (70°)3.0AprMay: 2.56 (70°)2.6MayJune: 2.09 (70°)2.1JunJuly: 2.24 (70°)2.2JulAugust: 2.73 (70°)2.7AugSeptember: 2.87 (70°)2.9SepOctober: 3.24 (70°)3.2OctNovember: 2.90 (70°)2.9NovDecember: 2.43 (70°)2.4Dec27°
MonthSun hours, flatSun hours at 70°kWh/kWp/day at 70°at 27°Mean temp.
January2.132.812.452.368.3 °C
February2.903.282.853.019.1 °C
March3.973.663.163.7711.2 °C
April4.833.482.954.1414.9 °C
May5.203.092.564.1218.6 °C
June4.552.572.093.4521.9 °C
July4.932.782.243.7225.7 °C
August5.203.392.734.1227.3 °C
September4.213.512.873.6624.5 °C
October3.593.883.243.5320.3 °C
November2.583.412.902.8115.7 °C
December1.982.812.432.2610.6 °C
Year3.84 avg3.22 avg987 kWh1247 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 560 Wp of panels at 70°, versus 520 Wp at 27°. Here the lower tilt is the better winter choice — the sun stays high enough. Size your own system.

Row spacing in Imarichō-kō

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°

3.3 mrow pitch at 27°

Row spacing calculator

How Imarichō-kō compares in Japan

Against the other 1,215 places in Japan with climate data, for a fixed array at its best angle.

506thof 1,216 places in Japan for sunshine, shared: 3.85 peak sun hours a day on flat ground.

−3%solar energy a year compared with the average place in Japan: 1,247 against 1,284 kWh per kWp.

−13 mindaylight on the longest day, compared with Tokyo: 14 h 21 min against 14 h 35 min.

27°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); Imarichō-kō ranks joint 506th. In its darkest month, June, 1 kWp of off-grid panels at 70° makes 2.10 kWh a day here, against 2.14 kWh on average in Japan. The shortest day lasts 9 h 57 min, +13 min compared with Tokyo.

The sunniest places in Japan

Solar forecast for Imarichō-kō, next 48 hours

Expected output of 1 kWp at 70°, computed from the ICON-EU weather model of the Deutscher Wetterdienst (DWD), Europe.

Loading the latest forecast…

Questions about the sun in Imarichō-kō

What is the best solar panel angle in Imarichō-kō?
For a fixed array facing south, the best year-round tilt in Imarichō-kō is 27°, worth about 1247 kWh per kWp a year. An off-grid system that has to get through December does better at about 55°.
What time is sunrise and sunset in Imarichō-kō today?
On 25 October 2026 the sun rises at 06:32 and sets at 17:36 local time (UTC+9), giving 11 h 04 min of daylight. Solar noon is at 12:04.
How many peak sun hours does Imarichō-kō get?
On a flat surface 3.8 hours a day averaged over the year, from 2.0 in December to 5.2 in May. Panels tilted at 70° receive 2.6 sun hours a day in June.
How high does the sun get in Imarichō-kō?
At solar noon the sun stands 80.2° above the horizon on the June solstice and 33.3° on the December solstice.
Is Imarichō-kō a good place for solar panels?
With 3.8 peak sun hours a day on flat ground, Imarichō-kō ranks joint 506th of 1,216 places in Japan for sunshine. A 1 kWp array at the best angle (27°) makes about 1,247 kWh a year here, 3% less than the average place in Japan.

Places near Imarichō-kō

All places in Japan

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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.