Central Java · Indonesia · 6.93° S · 109.17° E
Solar position in Tarub
Sun position, daylight and the best solar panel angle for Tarub — computed for 6.93° S, 109.17° E, 22 m above sea level.
The sun right now
Sun in Tarub today
Sunday, 25 October 2026 · local time UTC+7
| Event | Time | Direction / height |
|---|---|---|
| Astronomical dawn | 04:07 | sun 18° below horizon |
| Nautical dawn | 04:31 | 12° below |
| Civil dawn | 04:56 | 6° below |
| Sunrise | 05:18 | 102° ESE |
| Golden hour ends | 05:46 | sun 6° up |
| Solar noon | 11:27 | 84.8° high |
| Golden hour starts | 17:08 | sun 6° up |
| Sunset | 17:36 | 258° WSW |
| Civil dusk | 17:58 | 6° below |
| Nautical dusk | 18:23 | 12° below |
| Astronomical dusk | 18:48 | 18° below |
| Day length | 12 h 19 min | |
Sun path diagram for Tarub
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 59.6° at solar noon in Tarub; on the December solstice only 73.5°. 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 | 05:40 | 11:54 | 18:08 | 12 h 27 min | 77.0° |
| February | 05:48 | 11:56 | 18:05 | 12 h 17 min | 86.4° |
| March | 05:47 | 11:50 | 17:53 | 12 h 06 min | 82.8° |
| April | 05:44 | 11:42 | 17:39 | 11 h 55 min | 71.2° |
| May | 05:46 | 11:39 | 17:33 | 11 h 47 min | 62.9° |
| June | 05:53 | 11:45 | 17:36 | 11 h 43 min | 59.6° |
| July | 05:56 | 11:49 | 17:42 | 11 h 46 min | 62.6° |
| August | 05:49 | 11:46 | 17:43 | 11 h 55 min | 71.0° |
| September | 05:33 | 11:36 | 17:39 | 12 h 06 min | 82.4° |
| October | 05:19 | 11:28 | 17:36 | 12 h 17 min | 86.2° |
| November | 05:15 | 11:29 | 17:42 | 12 h 27 min | 77.0° |
| December | 05:25 | 11:41 | 17:57 | 12 h 32 min | 73.5° |
A year of daylight in Tarub
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 Tarub
Fixed array facing north (azimuth 0°). Energy per kWp from NASA POWER monthly climate, including clouds, temperature and snow reflection.
10°collects the most energy over a year: 1481 kWh per kWp.
0°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 | December kWh/kWp/day | Best ÷ worst month |
|---|---|---|---|---|
| 0° off-grid best | 1464 | 99% | 3.70 | 1.3× |
| 7° = latitude | 1479 | 100% | 3.58 | 1.3× |
| 10° year-round best | 1481 | 100% | 3.51 | 1.3× |
| 15° | 1475 | 100% | 3.39 | 1.4× |
| 30° | 1407 | 95% | 2.92 | 1.6× |
| 45° | 1263 | 85% | 2.32 | 1.9× |
| 60° | 1056 | 71% | 1.65 | 2.4× |
| 70° | 896 | 61% | 1.30 | 2.8× |
| 90° | 609 | 41% | 1.13 | 2.5× |
A fixed array in Tarub produces the most over a year at 10°. The design month for an off-grid system is December: at 0° it makes 3.70 kWh per kWp a day, 5% more than at 10°, and costs 1% of the yearly total. Why steep panels win winter.
Off-grid solar in Tarub 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 | 4.75 | 1.66 | 1.30 | 3.59 | 26.7 °C |
| February | 4.71 | 1.98 | 1.57 | 3.63 | 26.7 °C |
| March | 5.14 | 2.73 | 2.20 | 4.07 | 26.9 °C |
| April | 5.03 | 3.51 | 2.84 | 4.10 | 27.4 °C |
| May | 4.85 | 4.12 | 3.34 | 4.06 | 27.4 °C |
| June | 4.69 | 4.40 | 3.58 | 4.00 | 26.8 °C |
| July | 4.92 | 4.48 | 3.66 | 4.19 | 26.1 °C |
| August | 5.50 | 4.27 | 3.49 | 4.60 | 25.8 °C |
| September | 5.83 | 3.42 | 2.77 | 4.70 | 26.4 °C |
| October | 5.58 | 2.40 | 1.92 | 4.34 | 27.0 °C |
| November | 5.10 | 1.80 | 1.42 | 3.86 | 27.3 °C |
| December | 4.68 | 1.65 | 1.30 | 3.51 | 27.0 °C |
| Year | 5.07 avg | 3.04 avg | 896 kWh | 1481 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 910 Wp of panels at 70°, versus 340 Wp at 10°. Here the lower tilt is the better winter choice — the sun stays high enough. Size your own system.
Row spacing in Tarub
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.
1.9 mrow pitch at 70°
2.2 mrow pitch at 10°
How Tarub compares in Indonesia
Against the other 446 places in Indonesia with climate data, for a fixed array at its best angle.
225thof 447 places in Indonesia for sunshine, shared: 5.07 peak sun hours a day on flat ground.
−1%solar energy a year compared with the average place in Indonesia: 1,480 against 1,498 kWh per kWp.
+3 mindaylight on the longest day, compared with Jakarta: 12 h 32 min against 12 h 29 min.
10°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); Tarub ranks joint 225th. In its darkest month, December, 1 kWp of off-grid panels at 70° makes 1.30 kWh a day here, against 1.26 kWh on average in Indonesia. The shortest day lasts 11 h 43 min, −3 min compared with Jakarta.
Solar forecast for Tarub, 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 Tarub
What is the best solar panel angle in Tarub?
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Places near Tarub
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A free, live card for Tarub: 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.