Thailand · 15.79° N · 104.15° E
Solar position in Yasothon
Sun position, daylight and the best solar panel angle for Yasothon — computed for 15.79° N, 104.15° E, 135 m above sea level.
The sun right now
Sun in Yasothon today
Sunday, 25 October 2026 · local time UTC+7
| Event | Time | Direction / height |
|---|---|---|
| Astronomical dawn | 04:45 | sun 18° below horizon |
| Nautical dawn | 05:10 | 12° below |
| Civil dawn | 05:35 | 6° below |
| Sunrise | 05:57 | 102° ESE |
| Golden hour ends | 06:27 | sun 6° up |
| Solar noon | 11:47 | 62.1° high |
| Golden hour starts | 17:07 | sun 6° up |
| Sunset | 17:37 | 258° WSW |
| Civil dusk | 17:58 | 6° below |
| Nautical dusk | 18:24 | 12° below |
| Astronomical dusk | 18:49 | 18° below |
| Day length | 11 h 39 min | |
Sun path diagram for Yasothon
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 82.4° at solar noon in Yasothon; on the December solstice only 50.8°. Sunrise swings from 65° ENE in June to 114° ESE in December — a 49° 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 | 06:34 | 12:14 | 17:54 | 11 h 21 min | 54.3° |
| February | 06:25 | 12:17 | 18:08 | 11 h 43 min | 63.7° |
| March | 06:07 | 12:10 | 18:14 | 12 h 07 min | 74.4° |
| April | 05:45 | 12:02 | 18:19 | 12 h 34 min | 86.1° |
| May | 05:32 | 11:59 | 18:27 | 12 h 55 min | 85.6° |
| June | 05:33 | 12:05 | 18:37 | 13 h 04 min | 82.4° |
| July | 05:41 | 12:09 | 18:37 | 12 h 56 min | 85.3° |
| August | 05:49 | 12:06 | 18:23 | 12 h 35 min | 86.3° |
| September | 05:52 | 11:56 | 18:00 | 12 h 08 min | 74.9° |
| October | 05:56 | 11:47 | 17:39 | 11 h 42 min | 63.5° |
| November | 06:08 | 11:49 | 17:29 | 11 h 20 min | 54.3° |
| December | 06:25 | 12:01 | 17:37 | 11 h 11 min | 50.8° |
A year of daylight in Yasothon
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 Yasothon
Fixed array facing south (azimuth 180°). Energy per kWp from NASA POWER monthly climate, including clouds, temperature and snow reflection.
18°collects the most energy over a year: 1553 kWh per kWp.
5°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 | August kWh/kWp/day | Best ÷ worst month |
|---|---|---|---|---|
| 0° | 1493 | 96% | 3.81 | 1.2× |
| 5° off-grid best | 1522 | 98% | 3.80 | 1.2× |
| 15° | 1552 | 100% | 3.71 | 1.3× |
| 16° = latitude | 1553 | 100% | 3.70 | 1.3× |
| 18° year-round best | 1553 | 100% | 3.67 | 1.3× |
| 30° | 1525 | 98% | 3.43 | 1.5× |
| 45° | 1415 | 91% | 2.97 | 1.8× |
| 60° | 1231 | 79% | 2.38 | 2.3× |
| 70° | 1074 | 69% | 1.94 | 2.8× |
| 90° | 752 | 48% | 1.16 | 3.2× |
A fixed array in Yasothon produces the most over a year at 18°. The design month for an off-grid system is August: at 5° it makes 3.80 kWh per kWp a day, 4% more than at 18°, and costs 2% of the yearly total. Why steep panels win winter.
Off-grid solar in Yasothon at 70°
Daily energy of 1 kWp by month. Bars: panels at 70°. Line: panels at 18° (year-round best).
| Month | Sun hours, flat | Sun hours at 70° | kWh/kWp/day at 70° | at 18° | Mean temp. |
|---|---|---|---|---|---|
| January | 5.05 | 5.61 | 4.62 | 4.79 | 24.1 °C |
| February | 5.36 | 4.77 | 3.89 | 4.71 | 26.9 °C |
| March | 5.37 | 3.71 | 2.98 | 4.36 | 29.6 °C |
| April | 5.78 | 2.95 | 2.34 | 4.40 | 30.7 °C |
| May | 5.70 | 2.30 | 1.82 | 4.19 | 29.0 °C |
| June | 5.41 | 2.07 | 1.63 | 3.93 | 27.5 °C |
| July | 5.08 | 2.09 | 1.66 | 3.74 | 26.7 °C |
| August | 4.81 | 2.42 | 1.94 | 3.67 | 26.4 °C |
| September | 4.75 | 2.97 | 2.40 | 3.79 | 26.3 °C |
| October | 5.05 | 4.02 | 3.29 | 4.32 | 25.5 °C |
| November | 4.93 | 5.05 | 4.16 | 4.55 | 24.4 °C |
| December | 4.83 | 5.63 | 4.65 | 4.66 | 23.2 °C |
| Year | 5.17 avg | 3.63 avg | 1074 kWh | 1553 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 720 Wp of panels at 70°, versus 320 Wp at 18°. Here the lower tilt is the better winter choice — the sun stays high enough. Size your own system.
Row spacing in Yasothon
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.
2.4 mrow pitch at 70°
2.5 mrow pitch at 18°
How Yasothon compares in Thailand
Against the other 294 places in Thailand with climate data, for a fixed array at its best angle.
81stof 295 places in Thailand for sunshine, shared: 5.18 peak sun hours a day on flat ground.
+3%solar energy a year compared with the average place in Thailand: 1,553 against 1,509 kWh per kWp.
+8 mindaylight on the longest day, compared with Bangkok: 13 h 04 min against 12 h 56 min.
18°best year-round tilt here; across Thailand it runs from 4° in Narathiwat to 23° in Mae Chan.
Of the 295 places in Thailand, Bangkok and 7 other places get the most sun (5.23 peak sun hours a day) and Mae Ramat the least (4.74); Yasothon ranks joint 81st. In its darkest month, June, 1 kWp of off-grid panels at 70° makes 1.63 kWh a day here, against 1.53 kWh on average in Thailand. The shortest day lasts 11 h 11 min, −8 min compared with Bangkok.
Solar forecast for Yasothon, 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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Places near Yasothon
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A free, live card for Yasothon: 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.