Tamil Nadu · India · 9.81° N · 77.33° E
Solar position in Uttamapālaiyam
Sun position, daylight and the best solar panel angle for Uttamapālaiyam — computed for 9.81° N, 77.33° E, 386 m above sea level.
The sun right now
Sun in Uttamapālaiyam today
Saturday, 24 October 2026 · local time UTC+5:30
| Event | Time | Direction / height |
|---|---|---|
| Astronomical dawn | 04:58 | sun 18° below horizon |
| Nautical dawn | 05:23 | 12° below |
| Civil dawn | 05:48 | 6° below |
| Sunrise | 06:09 | 102° ESE |
| Golden hour ends | 06:38 | sun 6° up |
| Solar noon | 12:04 | 68.4° high |
| Golden hour starts | 17:31 | sun 6° up |
| Sunset | 18:00 | 258° WSW |
| Civil dusk | 18:21 | 6° below |
| Nautical dusk | 18:46 | 12° below |
| Astronomical dusk | 19:10 | 18° below |
| Day length | 11 h 50 min | |
Sun path diagram for Uttamapālaiyam
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 76.4° at solar noon in Uttamapālaiyam; on the December solstice only 56.8°. Sunrise swings from 66° ENE in June to 114° ESE in December — a 48° 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 | 06:42 | 12:31 | 18:21 | 11 h 39 min | 60.3° |
| February | 06:38 | 12:34 | 18:30 | 11 h 52 min | 69.7° |
| March | 06:24 | 12:27 | 18:31 | 12 h 07 min | 80.5° |
| April | 06:07 | 12:19 | 18:31 | 12 h 23 min | 87.9° |
| May | 05:59 | 12:17 | 18:35 | 12 h 36 min | 79.6° |
| June | 06:01 | 12:22 | 18:43 | 12 h 42 min | 76.4° |
| July | 06:08 | 12:27 | 18:45 | 12 h 37 min | 79.4° |
| August | 06:11 | 12:23 | 18:35 | 12 h 24 min | 87.7° |
| September | 06:10 | 12:13 | 18:17 | 12 h 07 min | 80.9° |
| October | 06:09 | 12:05 | 18:01 | 11 h 52 min | 69.5° |
| November | 06:17 | 12:06 | 17:55 | 11 h 39 min | 60.3° |
| December | 06:32 | 12:18 | 18:05 | 11 h 33 min | 56.8° |
A year of daylight in Uttamapālaiyam
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 Uttamapālaiyam
Fixed array facing south (azimuth 180°). Energy per kWp from NASA POWER monthly climate, including clouds, temperature and snow reflection.
10°collects the most energy over a year: 1556 kWh per kWp.
7°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° | 1536 | 99% | 3.80 | 1.4× |
| 7° off-grid best | 1554 | 100% | 3.69 | 1.4× |
| 10° year-round best = latitude | 1556 | 100% | 3.64 | 1.4× |
| 15° | 1552 | 100% | 3.52 | 1.5× |
| 30° | 1483 | 95% | 3.07 | 1.7× |
| 45° | 1334 | 86% | 2.46 | 2.0× |
| 60° | 1117 | 72% | 1.78 | 2.7× |
| 70° | 948 | 61% | 1.35 | 3.3× |
| 90° | 642 | 41% | 1.09 | 2.9× |
A fixed array in Uttamapālaiyam produces the most over a year at 10°. The design month for an off-grid system is July: at 7° it makes 3.69 kWh per kWp a day, 2% more than at 10°, and costs 0% of the yearly total. Why steep panels win winter.
Off-grid solar in Uttamapālaiyam at 70°
Daily energy of 1 kWp by month. Bars: panels at 70°. Line: panels at 10° (year-round best).
| Month | Sun hours, flat | Sun hours at 70° | kWh/kWp/day at 70° | at 10° | Mean temp. |
|---|---|---|---|---|---|
| January | 5.34 | 5.15 | 4.26 | 4.65 | 23.1 °C |
| February | 6.06 | 4.85 | 3.98 | 5.10 | 25.1 °C |
| March | 6.31 | 3.82 | 3.09 | 5.08 | 27.6 °C |
| April | 6.09 | 2.60 | 2.07 | 4.72 | 28.3 °C |
| May | 5.64 | 1.86 | 1.47 | 4.28 | 27.1 °C |
| June | 4.99 | 1.63 | 1.29 | 3.78 | 25.4 °C |
| July | 4.76 | 1.70 | 1.35 | 3.64 | 24.7 °C |
| August | 5.05 | 2.08 | 1.67 | 3.93 | 24.7 °C |
| September | 5.31 | 2.89 | 2.35 | 4.26 | 24.8 °C |
| October | 4.92 | 3.52 | 2.88 | 4.07 | 24.5 °C |
| November | 4.43 | 3.85 | 3.17 | 3.77 | 23.5 °C |
| December | 4.53 | 4.41 | 3.66 | 3.94 | 22.6 °C |
| Year | 5.28 avg | 3.19 avg | 948 kWh | 1556 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 920 Wp of panels at 70°, versus 320 Wp at 10°. Here the lower tilt is the better winter choice — the sun stays high enough. Size your own system.
Row spacing in Uttamapālaiyam
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.
2.1 mrow pitch at 70°
2.2 mrow pitch at 10°
How Uttamapālaiyam compares in India
Against the other 3,734 places in India with climate data, for a fixed array at its best angle.
1375thof 3,735 places in India for sunshine, shared: 5.28 peak sun hours a day on flat ground.
−1%solar energy a year compared with the average place in India: 1,556 against 1,575 kWh per kWp.
−35 mindaylight on the longest day, compared with Mumbai: 12 h 42 min against 13 h 17 min.
10°best year-round tilt here; across India it runs from 8° in Tirunelveli to 33° in Leh.
Of the 3,735 places in India, Balotra gets the most sun (5.73 peak sun hours a day) and Jining the least (3.68); Uttamapālaiyam ranks joint 1375th. In its darkest month, June, 1 kWp of off-grid panels at 70° makes 1.29 kWh a day here, against 1.70 kWh on average in India. The shortest day lasts 11 h 33 min, +34 min compared with Mumbai.
Solar forecast for Uttamapālaiyam, 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 Uttamapālaiyam: 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.