Tamil Nadu · India · 11.51° N · 77.24° E
Solar position in Sathyamangalam
Sun position, daylight and the best solar panel angle for Sathyamangalam — computed for 11.51° N, 77.24° E, 239 m above sea level.
The sun right now
Sun in Sathyamangalam today
Sunday, 25 October 2026 · local time UTC+5:30
| Event | Time | Direction / height |
|---|---|---|
| Astronomical dawn | 05:00 | sun 18° below horizon |
| Nautical dawn | 05:25 | 12° below |
| Civil dawn | 05:50 | 6° below |
| Sunrise | 06:11 | 102° ESE |
| Golden hour ends | 06:40 | sun 6° up |
| Solar noon | 12:05 | 66.4° high |
| Golden hour starts | 17:29 | sun 6° up |
| Sunset | 17:58 | 258° WSW |
| Civil dusk | 18:20 | 6° below |
| Nautical dusk | 18:44 | 12° below |
| Astronomical dusk | 19:09 | 18° below |
| Day length | 11 h 47 min | |
Sun path diagram for Sathyamangalam
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 78.1° at solar noon in Sathyamangalam; on the December solstice only 55.1°. 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 | 06:45 | 12:32 | 18:19 | 11 h 34 min | 58.6° |
| February | 06:39 | 12:34 | 18:29 | 11 h 50 min | 68.0° |
| March | 06:24 | 12:28 | 18:31 | 12 h 07 min | 78.8° |
| April | 06:06 | 12:19 | 18:33 | 12 h 26 min | 89.6° |
| May | 05:56 | 12:17 | 18:38 | 12 h 42 min | 81.3° |
| June | 05:58 | 12:22 | 18:46 | 12 h 48 min | 78.1° |
| July | 06:06 | 12:27 | 18:48 | 12 h 42 min | 81.1° |
| August | 06:10 | 12:24 | 18:37 | 12 h 27 min | 89.4° |
| September | 06:10 | 12:14 | 18:17 | 12 h 08 min | 79.2° |
| October | 06:11 | 12:05 | 18:00 | 11 h 49 min | 67.8° |
| November | 06:20 | 12:06 | 17:53 | 11 h 34 min | 58.6° |
| December | 06:35 | 12:19 | 18:02 | 11 h 27 min | 55.1° |
A year of daylight in Sathyamangalam
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 Sathyamangalam
Fixed array facing south (azimuth 180°). Energy per kWp from NASA POWER monthly climate, including clouds, temperature and snow reflection.
13°collects the most energy over a year: 1597 kWh per kWp.
3°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° | 1565 | 98% | 3.79 | 1.4× |
| 3° off-grid best | 1579 | 99% | 3.75 | 1.4× |
| 12° = latitude | 1597 | 100% | 3.61 | 1.5× |
| 13° year-round best | 1597 | 100% | 3.59 | 1.5× |
| 15° | 1596 | 100% | 3.54 | 1.5× |
| 30° | 1539 | 96% | 3.13 | 1.8× |
| 45° | 1398 | 88% | 2.56 | 2.1× |
| 60° | 1183 | 74% | 1.90 | 2.6× |
| 70° | 1010 | 63% | 1.47 | 3.3× |
| 90° | 686 | 43% | 1.14 | 3.2× |
A fixed array in Sathyamangalam produces the most over a year at 13°. The design month for an off-grid system is July: at 3° it makes 3.75 kWh per kWp a day, 5% more than at 13°, and costs 1% of the yearly total. Why steep panels win winter.
Off-grid solar in Sathyamangalam at 70°
Daily energy of 1 kWp by month. Bars: panels at 70°. Line: panels at 13° (year-round best).
| Month | Sun hours, flat | Sun hours at 70° | kWh/kWp/day at 70° | at 13° | Mean temp. |
|---|---|---|---|---|---|
| January | 5.43 | 5.49 | 4.54 | 4.87 | 23.1 °C |
| February | 6.19 | 5.17 | 4.24 | 5.32 | 25.4 °C |
| March | 6.48 | 4.05 | 3.28 | 5.24 | 28.3 °C |
| April | 6.35 | 2.77 | 2.20 | 4.87 | 29.7 °C |
| May | 5.96 | 1.96 | 1.55 | 4.43 | 28.3 °C |
| June | 5.18 | 1.77 | 1.39 | 3.85 | 26.3 °C |
| July | 4.77 | 1.85 | 1.47 | 3.59 | 25.7 °C |
| August | 4.93 | 2.20 | 1.77 | 3.80 | 25.6 °C |
| September | 5.36 | 3.04 | 2.46 | 4.28 | 25.5 °C |
| October | 4.96 | 3.65 | 2.99 | 4.14 | 24.8 °C |
| November | 4.57 | 4.16 | 3.43 | 3.99 | 23.2 °C |
| December | 4.69 | 4.82 | 4.00 | 4.22 | 22.4 °C |
| Year | 5.40 avg | 3.40 avg | 1010 kWh | 1597 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 850 Wp of panels at 70°, versus 330 Wp at 13°. Here the lower tilt is the better winter choice — the sun stays high enough. Size your own system.
Row spacing in Sathyamangalam
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.
2.2 mrow pitch at 70°
2.3 mrow pitch at 13°
How Sathyamangalam compares in India
Against the other 3,734 places in India with climate data, for a fixed array at its best angle.
675thof 3,735 places in India for sunshine, shared: 5.40 peak sun hours a day on flat ground.
+1%solar energy a year compared with the average place in India: 1,597 against 1,575 kWh per kWp.
−29 mindaylight on the longest day, compared with Mumbai: 12 h 48 min against 13 h 17 min.
13°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); Sathyamangalam ranks joint 675th. In its darkest month, June, 1 kWp of off-grid panels at 70° makes 1.40 kWh a day here, against 1.70 kWh on average in India. The shortest day lasts 11 h 27 min, +28 min compared with Mumbai.
Solar forecast for Sathyamangalam, 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 Sathyamangalam: 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.