Thailand · 17.41° N · 104.78° E
Solar position in Nakhon Phanom
Sun position, daylight and the best solar panel angle for Nakhon Phanom — computed for 17.41° N, 104.78° E, 154 m above sea level.
The sun right now
Sun in Nakhon Phanom today
Sunday, 25 October 2026 · local time UTC+7
| Event | Time | Direction / height |
|---|---|---|
| Astronomical dawn | 04:43 | sun 18° below horizon |
| Nautical dawn | 05:09 | 12° below |
| Civil dawn | 05:34 | 6° below |
| Sunrise | 05:56 | 102° ESE |
| Golden hour ends | 06:26 | sun 6° up |
| Solar noon | 11:44 | 60.5° high |
| Golden hour starts | 17:03 | sun 6° up |
| Sunset | 17:33 | 257° WSW |
| Civil dusk | 17:55 | 6° below |
| Nautical dusk | 18:20 | 12° below |
| Astronomical dusk | 18:46 | 18° below |
| Day length | 11 h 36 min | |
Sun path diagram for Nakhon Phanom
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 84.0° at solar noon in Nakhon Phanom; on the December solstice only 49.2°. 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 | 12:12 | 17:49 | 11 h 15 min | 52.7° |
| February | 06:24 | 12:14 | 18:04 | 11 h 40 min | 62.0° |
| March | 06:04 | 12:08 | 18:11 | 12 h 07 min | 72.8° |
| April | 05:41 | 11:59 | 18:18 | 12 h 37 min | 84.5° |
| May | 05:27 | 11:57 | 18:27 | 13 h 00 min | 87.2° |
| June | 05:27 | 12:02 | 18:37 | 13 h 10 min | 84.0° |
| July | 05:36 | 12:07 | 18:37 | 13 h 01 min | 86.9° |
| August | 05:45 | 12:04 | 18:22 | 12 h 38 min | 84.7° |
| September | 05:49 | 11:53 | 17:58 | 12 h 09 min | 73.3° |
| October | 05:55 | 11:45 | 17:35 | 11 h 40 min | 61.9° |
| November | 06:08 | 11:46 | 17:24 | 11 h 15 min | 52.7° |
| December | 06:26 | 11:58 | 17:31 | 11 h 05 min | 49.2° |
A year of daylight in Nakhon Phanom
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 Nakhon Phanom
Fixed array facing south (azimuth 180°). Energy per kWp from NASA POWER monthly climate, including clouds, temperature and snow reflection.
20°collects the most energy over a year: 1455 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 | July kWh/kWp/day | Best ÷ worst month |
|---|---|---|---|---|
| 0° | 1388 | 95% | 3.51 | 1.3× |
| 1° off-grid best | 1394 | 96% | 3.51 | 1.3× |
| 15° | 1451 | 100% | 3.34 | 1.4× |
| 17° = latitude | 1454 | 100% | 3.31 | 1.4× |
| 20° year-round best | 1455 | 100% | 3.25 | 1.4× |
| 30° | 1436 | 99% | 3.01 | 1.6× |
| 45° | 1343 | 92% | 2.54 | 1.9× |
| 60° | 1179 | 81% | 1.96 | 2.4× |
| 70° | 1038 | 71% | 1.55 | 2.9× |
| 90° | 732 | 50% | 1.07 | 3.3× |
A fixed array in Nakhon Phanom produces the most over a year at 20°. The design month for an off-grid system is July: at 1° it makes 3.51 kWh per kWp a day, 8% more than at 20°, and costs 4% of the yearly total. Why steep panels win winter.
Off-grid solar in Nakhon Phanom at 70°
Daily energy of 1 kWp by month. Bars: panels at 70°. Line: panels at 20° (year-round best).
| Month | Sun hours, flat | Sun hours at 70° | kWh/kWp/day at 70° | at 20° | Mean temp. |
|---|---|---|---|---|---|
| January | 4.67 | 5.28 | 4.42 | 4.59 | 19.8 °C |
| February | 5.06 | 4.62 | 3.83 | 4.58 | 22.7 °C |
| March | 5.04 | 3.58 | 2.92 | 4.17 | 26.0 °C |
| April | 5.45 | 2.92 | 2.34 | 4.19 | 28.4 °C |
| May | 5.24 | 2.28 | 1.81 | 3.85 | 27.9 °C |
| June | 4.80 | 2.01 | 1.59 | 3.48 | 26.8 °C |
| July | 4.43 | 1.95 | 1.55 | 3.25 | 26.1 °C |
| August | 4.29 | 2.24 | 1.80 | 3.26 | 25.8 °C |
| September | 4.56 | 2.93 | 2.38 | 3.66 | 25.6 °C |
| October | 4.71 | 3.84 | 3.16 | 4.08 | 24.2 °C |
| November | 4.63 | 4.84 | 4.02 | 4.37 | 22.2 °C |
| December | 4.43 | 5.21 | 4.37 | 4.40 | 19.5 °C |
| Year | 4.77 avg | 3.47 avg | 1038 kWh | 1455 kWh |
Sizing example. To run a 1 kWh-per-day load through July on LiFePO4 batteries (charge controller, battery and inverter losses included) you need about 760 Wp of panels at 70°, versus 360 Wp at 20°. Here the lower tilt is the better winter choice — the sun stays high enough. Size your own system.
Row spacing in Nakhon Phanom
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 20°
How Nakhon Phanom compares in Thailand
Against the other 294 places in Thailand with climate data, for a fixed array at its best angle.
292ndof 295 places in Thailand for sunshine, shared: 4.77 peak sun hours a day on flat ground.
−4%solar energy a year compared with the average place in Thailand: 1,455 against 1,509 kWh per kWp.
+14 mindaylight on the longest day, compared with Bangkok: 13 h 10 min against 12 h 56 min.
20°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); Nakhon Phanom ranks joint 292nd. In its darkest month, July, 1 kWp of off-grid panels at 70° makes 1.55 kWh a day here, against 1.53 kWh on average in Thailand. The shortest day lasts 11 h 05 min, −14 min compared with Bangkok.
Solar forecast for Nakhon Phanom, 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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A free, live card for Nakhon Phanom: 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.