North Sumatra · Indonesia · 4.06° N · 98.37° E
Solar position in Tanjungtiram
Sun position, daylight and the best solar panel angle for Tanjungtiram — computed for 4.06° N, 98.37° E, 2 m above sea level.
The sun right now
Sun in Tanjungtiram today
Sunday, 25 October 2026 · local time UTC+7
| Event | Time | Direction / height |
|---|---|---|
| Astronomical dawn | 05:00 | sun 18° below horizon |
| Nautical dawn | 05:24 | 12° below |
| Civil dawn | 05:49 | 6° below |
| Sunrise | 06:10 | 102° ESE |
| Golden hour ends | 06:38 | sun 6° up |
| Solar noon | 12:10 | 73.8° high |
| Golden hour starts | 17:42 | sun 6° up |
| Sunset | 18:10 | 258° WSW |
| Civil dusk | 18:31 | 6° below |
| Nautical dusk | 18:56 | 12° below |
| Astronomical dusk | 19:20 | 18° below |
| Day length | 12 h 00 min | |
Sun path diagram for Tanjungtiram
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 70.6° at solar noon in Tanjungtiram; on the December solstice only 62.5°. Sunrise swings from 66° ENE in June to 113° 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 | 06:40 | 12:37 | 18:35 | 11 h 55 min | 66.1° |
| February | 06:39 | 12:40 | 18:40 | 12 h 01 min | 75.4° |
| March | 06:30 | 12:33 | 18:37 | 12 h 07 min | 86.2° |
| April | 06:18 | 12:25 | 18:32 | 12 h 14 min | 82.2° |
| May | 06:13 | 12:23 | 18:32 | 12 h 19 min | 73.9° |
| June | 06:17 | 12:28 | 18:39 | 12 h 21 min | 70.6° |
| July | 06:23 | 12:33 | 18:42 | 12 h 19 min | 73.6° |
| August | 06:22 | 12:29 | 18:36 | 12 h 14 min | 82.0° |
| September | 06:16 | 12:19 | 18:23 | 12 h 07 min | 86.6° |
| October | 06:10 | 12:11 | 18:11 | 12 h 01 min | 75.2° |
| November | 06:14 | 12:12 | 18:10 | 11 h 55 min | 66.0° |
| December | 06:27 | 12:24 | 18:21 | 11 h 53 min | 62.5° |
A year of daylight in Tanjungtiram
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 Tanjungtiram
Fixed array facing south (azimuth 180°). Energy per kWp from NASA POWER monthly climate, including clouds, temperature and snow reflection.
3°collects the most energy over a year: 1344 kWh per kWp.
15°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° | 1342 | 100% | 3.19 | 1.3× |
| 3° year-round best | 1344 | 100% | 3.25 | 1.3× |
| 4° = latitude | 1343 | 100% | 3.27 | 1.3× |
| 15° off-grid best | 1320 | 98% | 3.41 | 1.2× |
| 30° | 1231 | 92% | 3.46 | 1.4× |
| 45° | 1081 | 80% | 3.33 | 1.7× |
| 60° | 884 | 66% | 3.03 | 2.2× |
| 70° | 746 | 55% | 2.75 | 2.5× |
| 90° | 523 | 39% | 2.02 | 2.0× |
A fixed array in Tanjungtiram produces the most over a year at 3°. The design month for an off-grid system is December: at 15° it makes 3.41 kWh per kWp a day, 5% more than at 3°, and costs 2% of the yearly total. Why steep panels win winter.
Off-grid solar in Tanjungtiram at 70°
Daily energy of 1 kWp by month. Bars: panels at 70°. Line: panels at 3° (year-round best).
| Month | Sun hours, flat | Sun hours at 70° | kWh/kWp/day at 70° | at 3° | Mean temp. |
|---|---|---|---|---|---|
| January | 4.48 | 3.66 | 3.00 | 3.62 | 25.0 °C |
| February | 4.99 | 3.51 | 2.86 | 4.02 | 25.4 °C |
| March | 5.20 | 2.92 | 2.37 | 4.15 | 25.8 °C |
| April | 4.89 | 2.08 | 1.66 | 3.86 | 26.2 °C |
| May | 4.76 | 1.64 | 1.29 | 3.73 | 26.3 °C |
| June | 4.84 | 1.54 | 1.21 | 3.78 | 26.0 °C |
| July | 4.71 | 1.56 | 1.22 | 3.69 | 25.7 °C |
| August | 4.73 | 1.83 | 1.46 | 3.73 | 25.7 °C |
| September | 4.55 | 2.36 | 1.90 | 3.62 | 25.5 °C |
| October | 4.33 | 2.83 | 2.30 | 3.47 | 25.3 °C |
| November | 4.09 | 3.15 | 2.56 | 3.29 | 25.1 °C |
| December | 4.03 | 3.36 | 2.75 | 3.25 | 25.0 °C |
| Year | 4.63 avg | 2.53 avg | 746 kWh | 1344 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 980 Wp of panels at 70°, versus 360 Wp at 3°. Here the lower tilt is the better winter choice — the sun stays high enough. Size your own system.
Row spacing in Tanjungtiram
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.
1.8 mrow pitch at 70°
2.1 mrow pitch at 3°
How Tanjungtiram compares in Indonesia
Against the other 446 places in Indonesia with climate data, for a fixed array at its best angle.
440thof 447 places in Indonesia for sunshine, shared: 4.63 peak sun hours a day on flat ground.
−10%solar energy a year compared with the average place in Indonesia: 1,344 against 1,498 kWh per kWp.
−8 mindaylight on the longest day, compared with Jakarta: 12 h 21 min against 12 h 29 min.
3°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); Tanjungtiram ranks joint 440th. In its darkest month, June, 1 kWp of off-grid panels at 70° makes 1.21 kWh a day here, against 1.26 kWh on average in Indonesia. The shortest day lasts 11 h 53 min, +8 min compared with Jakarta.
Solar forecast for Tanjungtiram, 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 Tanjungtiram
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Places near Tanjungtiram
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A free, live card for Tanjungtiram: 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.