Tamil Nadu · India · 9.96° N · 78.14° E
Solar position in Nāyanakulam
Sun position, daylight and the best solar panel angle for Nāyanakulam — computed for 9.96° N, 78.14° E, 141 m above sea level.
The sun right now
Sun in Nāyanakulam today
Saturday, 24 October 2026 · local time UTC+5:30
| Event | Time | Direction / height |
|---|---|---|
| Astronomical dawn | 04:55 | sun 18° below horizon |
| Nautical dawn | 05:20 | 12° below |
| Civil dawn | 05:45 | 6° below |
| Sunrise | 06:06 | 102° ESE |
| Golden hour ends | 06:35 | sun 6° up |
| Solar noon | 12:01 | 68.3° high |
| Golden hour starts | 17:28 | sun 6° up |
| Sunset | 17:56 | 258° WSW |
| Civil dusk | 18:18 | 6° below |
| Nautical dusk | 18:42 | 12° below |
| Astronomical dusk | 19:07 | 18° below |
| Day length | 11 h 50 min | |
Sun path diagram for Nāyanakulam
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 76.5° at solar noon in Nāyanakulam; on the December solstice only 56.6°. 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 | 06:39 | 12:28 | 18:17 | 11 h 38 min | 60.2° |
| February | 06:35 | 12:31 | 18:27 | 11 h 52 min | 69.5° |
| March | 06:21 | 12:24 | 18:28 | 12 h 07 min | 80.3° |
| April | 06:04 | 12:16 | 18:28 | 12 h 24 min | 88.1° |
| May | 05:55 | 12:14 | 18:32 | 12 h 37 min | 79.8° |
| June | 05:58 | 12:19 | 18:40 | 12 h 42 min | 76.5° |
| July | 06:05 | 12:23 | 18:42 | 12 h 37 min | 79.5° |
| August | 06:08 | 12:20 | 18:32 | 12 h 24 min | 87.9° |
| September | 06:06 | 12:10 | 18:14 | 12 h 08 min | 80.7° |
| October | 06:06 | 12:02 | 17:57 | 11 h 52 min | 69.3° |
| November | 06:14 | 12:03 | 17:52 | 11 h 38 min | 60.1° |
| December | 06:29 | 12:15 | 18:01 | 11 h 33 min | 56.6° |
A year of daylight in Nāyanakulam
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 Nāyanakulam
Fixed array facing south (azimuth 180°). Energy per kWp from NASA POWER monthly climate, including clouds, temperature and snow reflection.
9°collects the most energy over a year: 1596 kWh per kWp.
18°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 | November kWh/kWp/day | Best ÷ worst month |
|---|---|---|---|---|
| 0° | 1580 | 99% | 3.48 | 1.4× |
| 9° year-round best | 1596 | 100% | 3.69 | 1.4× |
| 10° = latitude | 1596 | 100% | 3.70 | 1.4× |
| 15° | 1589 | 100% | 3.78 | 1.4× |
| 18° off-grid best | 1580 | 99% | 3.81 | 1.3× |
| 30° | 1511 | 95% | 3.87 | 1.5× |
| 45° | 1350 | 85% | 3.75 | 1.9× |
| 60° | 1121 | 70% | 3.43 | 2.5× |
| 70° | 944 | 59% | 3.12 | 3.2× |
| 90° | 637 | 40% | 2.28 | 2.9× |
A fixed array in Nāyanakulam produces the most over a year at 9°. The design month for an off-grid system is November: at 18° it makes 3.81 kWh per kWp a day, 4% more than at 9°, and costs 1% of the yearly total. Why steep panels win winter.
Off-grid solar in Nāyanakulam at 70°
Daily energy of 1 kWp by month. Bars: panels at 70°. Line: panels at 9° (year-round best).
| Month | Sun hours, flat | Sun hours at 70° | kWh/kWp/day at 70° | at 9° | Mean temp. |
|---|---|---|---|---|---|
| January | 5.22 | 4.98 | 4.11 | 4.49 | 24.0 °C |
| February | 5.99 | 4.79 | 3.91 | 5.00 | 26.0 °C |
| March | 6.35 | 3.86 | 3.11 | 5.09 | 28.7 °C |
| April | 6.28 | 2.64 | 2.09 | 4.85 | 29.9 °C |
| May | 5.94 | 1.89 | 1.48 | 4.49 | 29.1 °C |
| June | 5.58 | 1.66 | 1.29 | 4.20 | 27.8 °C |
| July | 5.37 | 1.77 | 1.39 | 4.07 | 27.4 °C |
| August | 5.55 | 2.20 | 1.75 | 4.29 | 27.2 °C |
| September | 5.62 | 3.05 | 2.46 | 4.47 | 27.1 °C |
| October | 5.02 | 3.60 | 2.93 | 4.11 | 26.2 °C |
| November | 4.38 | 3.80 | 3.12 | 3.69 | 24.6 °C |
| December | 4.38 | 4.23 | 3.49 | 3.76 | 23.6 °C |
| Year | 5.47 avg | 3.20 avg | 944 kWh | 1596 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 910 Wp of panels at 70°, versus 320 Wp at 9°. Here the lower tilt is the better winter choice — the sun stays high enough. Size your own system.
Row spacing in Nāyanakulam
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 9°
How Nāyanakulam compares in India
Against the other 3,734 places in India with climate data, for a fixed array at its best angle.
290thof 3,735 places in India for sunshine, shared: 5.47 peak sun hours a day on flat ground.
+1%solar energy a year compared with the average place in India: 1,596 against 1,575 kWh per kWp.
−34 mindaylight on the longest day, compared with Mumbai: 12 h 42 min against 13 h 17 min.
9°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); Nāyanakulam ranks joint 290th. 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 Nāyanakulam, 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 Nāyanakulam: 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.