Sukhothai · Thailand · 17.02° N · 99.73° E
Solar position in Ban Na
Sun position, daylight and the best solar panel angle for Ban Na — computed for 17.02° N, 99.73° E, 59 m above sea level.
The sun right now
Sun in Ban Na today
Sunday, 25 October 2026 · local time UTC+7
| Event | Time | Direction / height |
|---|---|---|
| Astronomical dawn | 05:03 | sun 18° below horizon |
| Nautical dawn | 05:29 | 12° below |
| Civil dawn | 05:54 | 6° below |
| Sunrise | 06:16 | 102° ESE |
| Golden hour ends | 06:45 | sun 6° up |
| Solar noon | 12:05 | 60.9° high |
| Golden hour starts | 17:24 | sun 6° up |
| Sunset | 17:53 | 258° WSW |
| Civil dusk | 18:15 | 6° below |
| Nautical dusk | 18:41 | 12° below |
| Astronomical dusk | 19:06 | 18° below |
| Day length | 11 h 37 min | |
Sun path diagram for Ban Na
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 83.6° at solar noon in Ban Na; on the December solstice only 49.6°. 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 | 06:54 | 12:32 | 18:10 | 11 h 17 min | 53.1° |
| February | 06:44 | 12:34 | 18:25 | 11 h 41 min | 62.4° |
| March | 06:24 | 12:28 | 18:32 | 12 h 07 min | 73.2° |
| April | 06:01 | 12:19 | 18:38 | 12 h 37 min | 84.8° |
| May | 05:48 | 12:17 | 18:47 | 12 h 59 min | 86.8° |
| June | 05:48 | 12:22 | 18:57 | 13 h 09 min | 83.6° |
| July | 05:57 | 12:27 | 18:57 | 13 h 00 min | 86.6° |
| August | 06:05 | 12:24 | 18:42 | 12 h 37 min | 85.1° |
| September | 06:09 | 12:14 | 18:18 | 12 h 08 min | 73.7° |
| October | 06:15 | 12:05 | 17:55 | 11 h 40 min | 62.3° |
| November | 06:28 | 12:06 | 17:45 | 11 h 17 min | 53.1° |
| December | 06:45 | 12:18 | 17:52 | 11 h 07 min | 49.6° |
A year of daylight in Ban Na
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 Ban Na
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: 1516 kWh per kWp.
1°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° | 1454 | 96% | 3.66 | 1.3× |
| 1° off-grid best | 1460 | 96% | 3.66 | 1.3× |
| 15° | 1514 | 100% | 3.58 | 1.3× |
| 17° = latitude | 1515 | 100% | 3.56 | 1.3× |
| 18° year-round best | 1516 | 100% | 3.54 | 1.3× |
| 30° | 1491 | 98% | 3.32 | 1.4× |
| 45° | 1389 | 92% | 2.91 | 1.7× |
| 60° | 1213 | 80% | 2.37 | 2.2× |
| 70° | 1063 | 70% | 1.95 | 2.6× |
| 90° | 745 | 49% | 1.16 | 3.1× |
A fixed array in Ban Na produces the most over a year at 18°. The design month for an off-grid system is August: at 1° it makes 3.66 kWh per kWp a day, 3% more than at 18°, and costs 4% of the yearly total. Why steep panels win winter.
Off-grid solar in Ban Na 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 | 4.68 | 5.17 | 4.27 | 4.43 | 23.5 °C |
| February | 5.26 | 4.75 | 3.87 | 4.63 | 26.6 °C |
| March | 5.50 | 3.89 | 3.13 | 4.50 | 29.2 °C |
| April | 6.06 | 3.15 | 2.50 | 4.63 | 31.1 °C |
| May | 5.66 | 2.37 | 1.87 | 4.18 | 28.9 °C |
| June | 5.16 | 2.12 | 1.68 | 3.78 | 27.3 °C |
| July | 4.84 | 2.17 | 1.73 | 3.60 | 26.5 °C |
| August | 4.62 | 2.43 | 1.95 | 3.54 | 26.1 °C |
| September | 4.73 | 3.04 | 2.46 | 3.79 | 26.1 °C |
| October | 4.68 | 3.77 | 3.08 | 3.99 | 25.5 °C |
| November | 4.76 | 4.95 | 4.08 | 4.42 | 24.0 °C |
| December | 4.54 | 5.30 | 4.40 | 4.39 | 22.4 °C |
| Year | 5.04 avg | 3.58 avg | 1063 kWh | 1516 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 700 Wp of panels at 70°, versus 330 Wp at 18°. Here the lower tilt is the better winter choice — the sun stays high enough. Size your own system.
Row spacing in Ban Na
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.
2.5 mrow pitch at 70°
2.5 mrow pitch at 18°
How Ban Na compares in Thailand
Against the other 294 places in Thailand with climate data, for a fixed array at its best angle.
180thof 295 places in Thailand for sunshine, shared: 5.04 peak sun hours a day on flat ground.
±0%solar energy a year compared with the average place in Thailand: 1,516 against 1,509 kWh per kWp.
+12 mindaylight on the longest day, compared with Bangkok: 13 h 09 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); Ban Na ranks joint 180th. In its darkest month, June, 1 kWp of off-grid panels at 70° makes 1.68 kWh a day here, against 1.53 kWh on average in Thailand. The shortest day lasts 11 h 07 min, −12 min compared with Bangkok.
Solar forecast for Ban Na, 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 Ban Na
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Places near Ban Na
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A free, live card for Ban Na: 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.