East Nusa Tenggara · Indonesia · 8.22° S · 124.55° E
Solar position in Kalabahi
Sun position, daylight and the best solar panel angle for Kalabahi — computed for 8.22° S, 124.55° E, 33 m above sea level.
The sun right now
Sun in Kalabahi today
Sunday, 25 October 2026 · local time UTC+8
| Event | Time | Direction / height |
|---|---|---|
| Astronomical dawn | 04:04 | sun 18° below horizon |
| Nautical dawn | 04:29 | 12° below |
| Civil dawn | 04:54 | 6° below |
| Sunrise | 05:15 | 102° ESE |
| Golden hour ends | 05:43 | sun 6° up |
| Solar noon | 11:25 | 86.1° high |
| Golden hour starts | 17:08 | sun 6° up |
| Sunset | 17:36 | 258° WSW |
| Civil dusk | 17:57 | 6° below |
| Nautical dusk | 18:22 | 12° below |
| Astronomical dusk | 18:47 | 18° below |
| Day length | 12 h 21 min | |
Sun path diagram for Kalabahi
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 58.4° at solar noon in Kalabahi; on the December solstice only 74.8°. Sunrise swings from 66° ENE in June to 114° ESE in December — a 47° 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 | 05:37 | 11:53 | 18:08 | 12 h 31 min | 78.3° |
| February | 05:45 | 11:55 | 18:04 | 12 h 19 min | 87.6° |
| March | 05:45 | 11:49 | 17:52 | 12 h 06 min | 81.6° |
| April | 05:44 | 11:40 | 17:36 | 11 h 53 min | 69.9° |
| May | 05:46 | 11:38 | 17:29 | 11 h 43 min | 61.6° |
| June | 05:54 | 11:43 | 17:32 | 11 h 39 min | 58.4° |
| July | 05:57 | 11:48 | 17:39 | 11 h 42 min | 61.3° |
| August | 05:48 | 11:45 | 17:41 | 11 h 53 min | 69.7° |
| September | 05:32 | 11:35 | 17:37 | 12 h 06 min | 81.1° |
| October | 05:16 | 11:26 | 17:36 | 12 h 19 min | 87.5° |
| November | 05:12 | 11:27 | 17:43 | 12 h 31 min | 78.3° |
| December | 05:21 | 11:39 | 17:57 | 12 h 36 min | 74.8° |
A year of daylight in Kalabahi
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 Kalabahi
Fixed array facing north (azimuth 0°). Energy per kWp from NASA POWER monthly climate, including clouds, temperature and snow reflection.
11°collects the most energy over a year: 1735 kWh per kWp.
4°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 | January kWh/kWp/day | Best ÷ worst month |
|---|---|---|---|---|
| 0° | 1710 | 99% | 4.33 | 1.3× |
| 4° off-grid best | 1726 | 99% | 4.25 | 1.3× |
| 8° = latitude | 1734 | 100% | 4.16 | 1.3× |
| 11° year-round best | 1735 | 100% | 4.08 | 1.3× |
| 15° | 1731 | 100% | 3.96 | 1.4× |
| 30° | 1651 | 95% | 3.39 | 1.6× |
| 45° | 1477 | 85% | 2.64 | 2.0× |
| 60° | 1221 | 70% | 1.81 | 2.8× |
| 70° | 1023 | 59% | 1.32 | 3.6× |
| 90° | 674 | 39% | 1.10 | 3.5× |
A fixed array in Kalabahi produces the most over a year at 11°. The design month for an off-grid system is January: at 4° it makes 4.25 kWh per kWp a day, 4% more than at 11°, and costs 1% of the yearly total. Why steep panels win winter.
Off-grid solar in Kalabahi at 70°
Daily energy of 1 kWp by month. Bars: panels at 70°. Line: panels at 11° (year-round best).
| Month | Sun hours, flat | Sun hours at 70° | kWh/kWp/day at 70° | at 11° | Mean temp. |
|---|---|---|---|---|---|
| January | 5.47 | 1.68 | 1.32 | 4.08 | 27.5 °C |
| February | 5.66 | 2.14 | 1.70 | 4.34 | 27.3 °C |
| March | 5.86 | 3.03 | 2.44 | 4.64 | 27.5 °C |
| April | 5.97 | 4.31 | 3.49 | 4.93 | 28.1 °C |
| May | 5.44 | 4.98 | 4.04 | 4.66 | 27.9 °C |
| June | 5.15 | 5.25 | 4.28 | 4.51 | 27.2 °C |
| July | 5.43 | 5.36 | 4.37 | 4.74 | 26.7 °C |
| August | 6.20 | 5.10 | 4.15 | 5.26 | 26.7 °C |
| September | 6.78 | 3.97 | 3.21 | 5.47 | 27.7 °C |
| October | 6.93 | 2.58 | 2.06 | 5.32 | 28.8 °C |
| November | 6.66 | 1.65 | 1.29 | 4.92 | 29.2 °C |
| December | 5.68 | 1.57 | 1.22 | 4.18 | 28.3 °C |
| Year | 5.94 avg | 3.48 avg | 1023 kWh | 1735 kWh |
Sizing example. To run a 1 kWh-per-day load through December on LiFePO4 batteries (charge controller, battery and inverter losses included) you need about 970 Wp of panels at 70°, versus 290 Wp at 11°. Here the lower tilt is the better winter choice — the sun stays high enough. Size your own system.
Row spacing in Kalabahi
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.
2.0 mrow pitch at 70°
2.2 mrow pitch at 11°
How Kalabahi compares in Indonesia
Against the other 446 places in Indonesia with climate data, for a fixed array at its best angle.
2ndof 447 places in Indonesia for sunshine: 5.94 peak sun hours a day on flat ground.
+16%solar energy a year compared with the average place in Indonesia: 1,735 against 1,498 kWh per kWp.
+7 mindaylight on the longest day, compared with Jakarta: 12 h 36 min against 12 h 29 min.
11°best year-round tilt here; across Indonesia it runs from 0° in Batam to 12° in Kupang.
Of the 447 places in Indonesia, Lewoleba gets the most sun (5.95 peak sun hours a day) and Kuala Tungkal the least (4.48); Kalabahi ranks 2nd. In its darkest month, December, 1 kWp of off-grid panels at 70° makes 1.22 kWh a day here, against 1.26 kWh on average in Indonesia. The shortest day lasts 11 h 39 min, −7 min compared with Jakarta.
Solar forecast for Kalabahi, 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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Questions about the sun in Kalabahi
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Places near Kalabahi
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A free, live card for Kalabahi: 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.