White Nile · Sudan · 13.02° N · 31.87° E
Solar position in Tandaltī
Sun position, daylight and the best solar panel angle for Tandaltī — computed for 13.02° N, 31.87° E, 422 m above sea level.
The sun right now
Sun in Tandaltī today
Saturday, 24 October 2026 · local time UTC+2
| Event | Time | Direction / height |
|---|---|---|
| Astronomical dawn | 04:32 | sun 18° below horizon |
| Nautical dawn | 04:57 | 12° below |
| Civil dawn | 05:22 | 6° below |
| Sunrise | 05:44 | 102° ESE |
| Golden hour ends | 06:13 | sun 6° up |
| Solar noon | 11:36 | 65.2° high |
| Golden hour starts | 17:00 | sun 6° up |
| Sunset | 17:29 | 258° WSW |
| Civil dusk | 17:50 | 6° below |
| Nautical dusk | 18:15 | 12° below |
| Astronomical dusk | 18:40 | 18° below |
| Day length | 11 h 45 min | |
Sun path diagram for Tandaltī
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 79.6° at solar noon in Tandaltī; on the December solstice only 53.6°. 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 | 06:19 | 12:03 | 17:48 | 11 h 29 min | 57.1° |
| February | 06:12 | 12:06 | 17:59 | 11 h 47 min | 66.5° |
| March | 05:56 | 11:59 | 18:03 | 12 h 07 min | 77.3° |
| April | 05:36 | 11:51 | 18:05 | 12 h 29 min | 88.9° |
| May | 05:25 | 11:49 | 18:12 | 12 h 46 min | 82.8° |
| June | 05:27 | 11:54 | 18:21 | 12 h 54 min | 79.6° |
| July | 05:35 | 11:59 | 18:22 | 12 h 47 min | 82.6° |
| August | 05:40 | 11:55 | 18:10 | 12 h 29 min | 89.0° |
| September | 05:41 | 11:45 | 17:49 | 12 h 08 min | 77.6° |
| October | 05:43 | 11:37 | 17:30 | 11 h 47 min | 66.2° |
| November | 05:53 | 11:38 | 17:22 | 11 h 29 min | 57.0° |
| December | 06:09 | 11:50 | 17:31 | 11 h 22 min | 53.6° |
A year of daylight in Tandaltī
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 Tandaltī
Fixed array facing south (azimuth 180°). Energy per kWp from NASA POWER monthly climate, including clouds, temperature and snow reflection.
16°collects the most energy over a year: 1855 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 | July kWh/kWp/day | Best ÷ worst month |
|---|---|---|---|---|
| 0° off-grid best | 1795 | 97% | 4.50 | 1.3× |
| 13° = latitude | 1853 | 100% | 4.23 | 1.3× |
| 15° | 1855 | 100% | 4.17 | 1.4× |
| 16° year-round best | 1855 | 100% | 4.14 | 1.4× |
| 30° | 1807 | 97% | 3.62 | 1.7× |
| 45° | 1655 | 89% | 2.88 | 2.1× |
| 60° | 1412 | 76% | 2.04 | 3.0× |
| 70° | 1211 | 65% | 1.49 | 3.9× |
| 90° | 822 | 44% | 1.10 | 4.0× |
A fixed array in Tandaltī produces the most over a year at 16°. The design month for an off-grid system is July: at 0° it makes 4.50 kWh per kWp a day, 9% more than at 16°, and costs 3% of the yearly total. Why steep panels win winter.
Off-grid solar in Tandaltī at 70°
Daily energy of 1 kWp by month. Bars: panels at 70°. Line: panels at 16° (year-round best).
| Month | Sun hours, flat | Sun hours at 70° | kWh/kWp/day at 70° | at 16° | Mean temp. |
|---|---|---|---|---|---|
| January | 6.01 | 6.57 | 5.41 | 5.62 | 23.7 °C |
| February | 6.59 | 5.72 | 4.66 | 5.74 | 26.5 °C |
| March | 7.04 | 4.54 | 3.66 | 5.69 | 29.3 °C |
| April | 7.22 | 3.16 | 2.50 | 5.42 | 32.1 °C |
| May | 6.83 | 2.17 | 1.69 | 4.87 | 33.2 °C |
| June | 6.29 | 1.83 | 1.42 | 4.43 | 32.0 °C |
| July | 5.73 | 1.90 | 1.49 | 4.14 | 29.4 °C |
| August | 5.55 | 2.35 | 1.87 | 4.18 | 27.9 °C |
| September | 6.03 | 3.43 | 2.76 | 4.76 | 28.9 °C |
| October | 6.18 | 4.78 | 3.84 | 5.17 | 30.2 °C |
| November | 6.08 | 6.24 | 5.07 | 5.51 | 27.4 °C |
| December | 5.80 | 6.76 | 5.55 | 5.51 | 24.5 °C |
| Year | 6.27 avg | 4.11 avg | 1211 kWh | 1855 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 830 Wp of panels at 70°, versus 280 Wp at 16°. Here the lower tilt is the better winter choice — the sun stays high enough. Size your own system.
Row spacing in Tandaltī
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°
2.4 mrow pitch at 16°
How Tandaltī compares in Sudan
Against the other 74 places in Sudan with climate data, for a fixed array at its best angle.
49thof 75 places in Sudan for sunshine, shared: 6.27 peak sun hours a day on flat ground.
−1%solar energy a year compared with the average place in Sudan: 1,855 against 1,880 kWh per kWp.
−10 mindaylight on the longest day, compared with Khartoum: 12 h 54 min against 13 h 03 min.
16°best year-round tilt here; across Sudan it runs from 12° in Abyei to 19° in Atbara.
Of the 75 places in Sudan, Mellit gets the most sun (6.72 peak sun hours a day) and Port Sudan the least (5.78); Tandaltī ranks joint 49th. In its darkest month, June, 1 kWp of off-grid panels at 70° makes 1.42 kWh a day here, against 1.52 kWh on average in Sudan. The shortest day lasts 11 h 22 min, +9 min compared with Khartoum.
Solar forecast for Tandaltī, 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 Tandaltī
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Places near Tandaltī
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A free, live card for Tandaltī: 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.