Solarposition.org

Hyōgo · Japan · 34.86° N · 134.55° E

Solar position in Tatsunochō-tominaga

Sun position, daylight and the best solar panel angle for Tatsunochō-tominaga — computed for 34.86° N, 134.55° E, 28 m above sea level.

Sunrise today06:15104° ESE
Sunset today17:15256° WSW
Best panel angle30°year-round, facing south
Off-grid angle57°best for the darkest month

The sun right now

Azimuth180.0°
Elevation43.1°
At solar noon, 11:45Open on the sun map

Sun in Tatsunochō-tominaga today

Sunday, 25 October 2026 · local time UTC+9

EventTimeDirection / height
Astronomical dawn04:51sun 18° below horizon
Nautical dawn05:2012° below
Civil dawn05:496° below
Sunrise06:15104° ESE
Golden hour ends06:50sun 6° up
Solar noon11:4543.1° high
Golden hour starts16:40sun 6° up
Sunset17:15256° WSW
Civil dusk17:416° below
Nautical dusk18:1012° below
Astronomical dusk18:4018° below
Day length11 h 00 min

Sun path diagram for Tatsunochō-tominaga

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 solstice5678910111213141516171819EquinoxDecember solstice8910111213141516Today
  • June solstice
  • Equinox
  • December solstice
  • Today

On the June solstice the sun reaches 78.6° at solar noon in Tatsunochō-tominaga; on the December solstice only 31.7°. 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.

MonthSunriseSolar noonSunsetDay lengthNoon elevation
January07:0712:1317:1910 h 12 min35.2°
February06:4112:1517:4911 h 08 min44.6°
March06:0412:0918:1312 h 09 min55.3°
April05:2312:0018:3813 h 15 min67.0°
May04:5411:5819:0214 h 08 min75.3°
June04:4812:0319:1814 h 30 min78.6°
July05:0312:0819:1214 h 10 min75.6°
August05:2612:0418:4313 h 17 min67.3°
September05:4811:5418:0012 h 12 min55.9°
October06:1211:4617:2011 h 08 min44.5°
November06:4111:4716:5310 h 12 min35.3°
December07:0511:5916:549 h 49 min31.7°

A year of daylight in Tatsunochō-tominaga

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 Tatsunochō-tominaga

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

30°collects the most energy over a year: 1279 kWh per kWp.

57°gives the most in the darkest month — the one an off-grid system is sized for.

40%50%60%70%80%90%100%0°10°20°30°40°50°60°70°80°90°Best year-round 30°Best worst-month 57°70°Yearly energyWorst-month energy
  • Yearly energy
  • Worst-month energy
TiltkWh/kWp per yearShare of best yearDecember kWh/kWp/dayBest ÷ worst month
0°114389%1.642.7×
15°124597%2.142.1×
30° year-round best1279100%2.521.7×
35° = latitude1274100%2.611.6×
45°124297%2.751.5×
57° off-grid best116391%2.811.3×
60°113789%2.811.3×
70°103381%2.751.4×
90°76360%2.431.9×

A fixed array in Tatsunochō-tominaga produces the most over a year at 30°. The design month for an off-grid system is December: at 57° it makes 2.81 kWh per kWp a day, 11% more than at 30°, and costs 9% of the yearly total. Why steep panels win winter.

Off-grid solar in Tatsunochō-tominaga at 70°

Daily energy of 1 kWp by month. Bars: panels at 70°. Line: panels at 30° (year-round best).

012345January: 2.83 (70°)2.8JanFebruary: 2.98 (70°)3.0FebMarch: 3.29 (70°)3.3MarApril: 3.09 (70°)3.1AprMay: 2.67 (70°)2.7MayJune: 2.27 (70°)2.3JunJuly: 2.31 (70°)2.3JulAugust: 2.82 (70°)2.8AugSeptember: 2.86 (70°)2.9SepOctober: 3.12 (70°)3.1OctNovember: 2.98 (70°)3.0NovDecember: 2.75 (70°)2.8Dec30°
MonthSun hours, flatSun hours at 70°kWh/kWp/day at 70°at 30°Mean temp.
January2.203.182.832.674.1 °C
February2.863.362.983.124.8 °C
March3.913.753.293.867.5 °C
April4.873.613.094.2612.3 °C
May5.313.192.674.2117.1 °C
June4.902.782.273.7021.1 °C
July4.932.862.313.7125.1 °C
August5.213.492.824.1526.2 °C
September4.043.472.863.5822.7 °C
October3.303.703.123.3817.3 °C
November2.473.462.982.8811.9 °C
December2.013.132.752.526.5 °C
Year3.84 avg3.33 avg1033 kWh1279 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 520 Wp of panels at 70°, versus 470 Wp at 30°. Here the lower tilt is the better winter choice — the sun stays high enough. Size your own system.

Row spacing in Tatsunochō-tominaga

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.

4.1 mrow pitch at 70°

3.6 mrow pitch at 30°

Row spacing calculator

How Tatsunochō-tominaga 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: 3.84 peak sun hours a day on flat ground.

±0%solar energy a year compared with the average place in Japan: 1,279 against 1,284 kWh per kWp.

−5 mindaylight on the longest day, compared with Tokyo: 14 h 30 min against 14 h 35 min.

30°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); Tatsunochō-tominaga ranks joint 506th. In its darkest month, June, 1 kWp of off-grid panels at 70° makes 2.28 kWh a day here, against 2.14 kWh on average in Japan. The shortest day lasts 9 h 49 min, +4 min compared with Tokyo.

The sunniest places in Japan

Solar forecast for Tatsunochō-tominaga, 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 Tatsunochō-tominaga

What is the best solar panel angle in Tatsunochō-tominaga?
For a fixed array facing south, the best year-round tilt in Tatsunochō-tominaga is 30°, worth about 1279 kWh per kWp a year. An off-grid system that has to get through December does better at about 57°.
What time is sunrise and sunset in Tatsunochō-tominaga today?
On 25 October 2026 the sun rises at 06:15 and sets at 17:15 local time (UTC+9), giving 11 h 00 min of daylight. Solar noon is at 11:45.
How many peak sun hours does Tatsunochō-tominaga get?
On a flat surface 3.8 hours a day averaged over the year, from 2.0 in December to 5.3 in May. Panels tilted at 70° receive 2.8 sun hours a day in June.
How high does the sun get in Tatsunochō-tominaga?
At solar noon the sun stands 78.6° above the horizon on the June solstice and 31.7° on the December solstice.
Is Tatsunochō-tominaga a good place for solar panels?
With 3.8 peak sun hours a day on flat ground, Tatsunochō-tominaga ranks joint 506th of 1,216 places in Japan for sunshine. A 1 kWp array at the best angle (30°) makes about 1,279 kWh a year here, as much as the average place in Japan.

Places near Tatsunochō-tominaga

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.