Tamil Nadu · India · 12.70° N · 77.81° E
Solar position in Mattigiri
Sun position, daylight and the best solar panel angle for Mattigiri — computed for 12.70° N, 77.81° E, 905 m above sea level.
The sun right now
Sun in Mattigiri 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 | 06:10 | 102° ESE |
| Golden hour ends | 06:38 | sun 6° up |
| Solar noon | 12:02 | 65.5° high |
| Golden hour starts | 17:26 | sun 6° up |
| Sunset | 17:55 | 258° WSW |
| Civil dusk | 18:17 | 6° below |
| Nautical dusk | 18:42 | 12° below |
| Astronomical dusk | 19:07 | 18° below |
| Day length | 11 h 45 min | |
Sun path diagram for Mattigiri
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 79.3° at solar noon in Mattigiri; on the December solstice only 53.9°. 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 | 12:30 | 18:15 | 11 h 30 min | 57.4° |
| February | 06:38 | 12:32 | 18:26 | 11 h 48 min | 66.8° |
| March | 06:22 | 12:26 | 18:29 | 12 h 07 min | 77.6° |
| April | 06:03 | 12:17 | 18:31 | 12 h 29 min | 89.2° |
| May | 05:52 | 12:15 | 18:38 | 12 h 45 min | 82.5° |
| June | 05:54 | 12:20 | 18:46 | 12 h 52 min | 79.3° |
| July | 06:02 | 12:25 | 18:48 | 12 h 46 min | 82.3° |
| August | 06:07 | 12:21 | 18:36 | 12 h 29 min | 89.4° |
| September | 06:07 | 12:11 | 18:15 | 12 h 08 min | 78.0° |
| October | 06:09 | 12:03 | 17:57 | 11 h 47 min | 66.6° |
| November | 06:19 | 12:04 | 17:49 | 11 h 30 min | 57.4° |
| December | 06:35 | 12:16 | 17:58 | 11 h 23 min | 53.9° |
A year of daylight in Mattigiri
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 Mattigiri
Fixed array facing south (azimuth 180°). Energy per kWp from NASA POWER monthly climate, including clouds, temperature and snow reflection.
14°collects the most energy over a year: 1635 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 | July kWh/kWp/day | Best ÷ worst month |
|---|---|---|---|---|
| 0° | 1597 | 98% | 3.90 | 1.4× |
| 5° off-grid best | 1620 | 99% | 3.85 | 1.4× |
| 13° = latitude | 1635 | 100% | 3.71 | 1.5× |
| 14° year-round best | 1635 | 100% | 3.69 | 1.5× |
| 15° | 1635 | 100% | 3.67 | 1.5× |
| 30° | 1583 | 97% | 3.26 | 1.7× |
| 45° | 1444 | 88% | 2.70 | 2.0× |
| 60° | 1230 | 75% | 2.04 | 2.5× |
| 70° | 1056 | 65% | 1.60 | 3.1× |
| 90° | 720 | 44% | 1.22 | 3.5× |
A fixed array in Mattigiri produces the most over a year at 14°. The design month for an off-grid system is July: at 5° it makes 3.85 kWh per kWp a day, 4% more than at 14°, and costs 1% of the yearly total. Why steep panels win winter.
Off-grid solar in Mattigiri at 70°
Daily energy of 1 kWp by month. Bars: panels at 70°. Line: panels at 14° (year-round best).
| Month | Sun hours, flat | Sun hours at 70° | kWh/kWp/day at 70° | at 14° | Mean temp. |
|---|---|---|---|---|---|
| January | 5.41 | 5.64 | 4.69 | 4.96 | 21.6 °C |
| February | 6.24 | 5.36 | 4.42 | 5.44 | 24.0 °C |
| March | 6.59 | 4.23 | 3.43 | 5.37 | 27.3 °C |
| April | 6.63 | 2.89 | 2.31 | 5.08 | 29.0 °C |
| May | 6.24 | 2.06 | 1.63 | 4.62 | 27.9 °C |
| June | 5.44 | 1.91 | 1.51 | 4.04 | 25.5 °C |
| July | 4.90 | 2.01 | 1.60 | 3.69 | 24.8 °C |
| August | 4.95 | 2.34 | 1.89 | 3.83 | 24.5 °C |
| September | 5.29 | 3.10 | 2.53 | 4.25 | 24.2 °C |
| October | 5.00 | 3.76 | 3.10 | 4.21 | 23.4 °C |
| November | 4.60 | 4.31 | 3.58 | 4.09 | 21.8 °C |
| December | 4.65 | 4.92 | 4.11 | 4.27 | 20.8 °C |
| Year | 5.49 avg | 3.53 avg | 1056 kWh | 1635 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 780 Wp of panels at 70°, versus 320 Wp at 14°. Here the lower tilt is the better winter choice — the sun stays high enough. Size your own system.
Row spacing in Mattigiri
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 14°
How Mattigiri compares in India
Against the other 3,734 places in India with climate data, for a fixed array at its best angle.
204thof 3,735 places in India for sunshine, shared: 5.49 peak sun hours a day on flat ground.
+4%solar energy a year compared with the average place in India: 1,636 against 1,575 kWh per kWp.
−24 mindaylight on the longest day, compared with Mumbai: 12 h 52 min against 13 h 17 min.
14°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); Mattigiri ranks joint 204th. In its darkest month, June, 1 kWp of off-grid panels at 70° makes 1.51 kWh a day here, against 1.70 kWh on average in India. The shortest day lasts 11 h 23 min, +24 min compared with Mumbai.
Solar forecast for Mattigiri, 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 Mattigiri: 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.