Sanaa Governorate · Yemen · 15.17° N · 44.32° E
Solar position in Sayyān
Sun position, daylight and the best solar panel angle for Sayyān — computed for 15.17° N, 44.32° E, 2482 m above sea level.
The sun right now
Sun in Sayyān today
Saturday, 24 October 2026 · local time UTC+3
| Event | Time | Direction / height |
|---|---|---|
| Astronomical dawn | 04:44 | sun 18° below horizon |
| Nautical dawn | 05:09 | 12° below |
| Civil dawn | 05:34 | 6° below |
| Sunrise | 05:56 | 102° ESE |
| Golden hour ends | 06:25 | sun 6° up |
| Solar noon | 11:46 | 63.0° high |
| Golden hour starts | 17:08 | sun 6° up |
| Sunset | 17:37 | 258° WSW |
| Civil dusk | 17:59 | 6° below |
| Nautical dusk | 18:24 | 12° below |
| Astronomical dusk | 18:49 | 18° below |
| Day length | 11 h 41 min | |
Sun path diagram for Sayyān
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 81.7° at solar noon in Sayyān; on the December solstice only 51.4°. Sunrise swings from 65° ENE in June to 114° ESE in December — a 49° 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 | 06:32 | 12:14 | 17:55 | 11 h 23 min | 55.0° |
| February | 06:24 | 12:16 | 18:08 | 11 h 44 min | 64.3° |
| March | 06:06 | 12:09 | 18:13 | 12 h 07 min | 75.1° |
| April | 05:44 | 12:01 | 18:18 | 12 h 33 min | 86.7° |
| May | 05:32 | 11:59 | 18:25 | 12 h 53 min | 85.0° |
| June | 05:33 | 12:04 | 18:35 | 13 h 02 min | 81.7° |
| July | 05:42 | 12:09 | 18:35 | 12 h 54 min | 84.7° |
| August | 05:49 | 12:05 | 18:22 | 12 h 33 min | 86.9° |
| September | 05:51 | 11:55 | 17:59 | 12 h 08 min | 75.5° |
| October | 05:55 | 11:47 | 17:38 | 11 h 43 min | 64.1° |
| November | 06:07 | 11:48 | 17:29 | 11 h 22 min | 54.9° |
| December | 06:23 | 12:00 | 17:37 | 11 h 14 min | 51.4° |
A year of daylight in Sayyān
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 Sayyān
Fixed array facing south (azimuth 180°). Energy per kWp from NASA POWER monthly climate, including clouds, temperature and snow reflection.
17°collects the most energy over a year: 1951 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 | July kWh/kWp/day | Best ÷ worst month |
|---|---|---|---|---|
| 0° | 1875 | 96% | 4.85 | 1.2× |
| 4° off-grid best | 1906 | 98% | 4.79 | 1.2× |
| 15° = latitude | 1949 | 100% | 4.52 | 1.3× |
| 17° year-round best | 1951 | 100% | 4.46 | 1.3× |
| 30° | 1910 | 98% | 3.96 | 1.5× |
| 45° | 1762 | 90% | 3.20 | 2.0× |
| 60° | 1517 | 78% | 2.33 | 2.6× |
| 70° | 1311 | 67% | 1.76 | 3.4× |
| 90° | 896 | 46% | 1.24 | 3.9× |
A fixed array in Sayyān produces the most over a year at 17°. The design month for an off-grid system is July: at 4° it makes 4.79 kWh per kWp a day, 7% more than at 17°, and costs 2% of the yearly total. Why steep panels win winter.
Off-grid solar in Sayyān at 70°
Daily energy of 1 kWp by month. Bars: panels at 70°. Line: panels at 17° (year-round best).
| Month | Sun hours, flat | Sun hours at 70° | kWh/kWp/day at 70° | at 17° | Mean temp. |
|---|---|---|---|---|---|
| January | 5.73 | 6.54 | 5.53 | 5.60 | 17.2 °C |
| February | 6.32 | 5.75 | 4.84 | 5.76 | 19.1 °C |
| March | 6.77 | 4.58 | 3.81 | 5.71 | 21.3 °C |
| April | 6.91 | 3.17 | 2.61 | 5.40 | 23.1 °C |
| May | 7.04 | 2.38 | 1.92 | 5.18 | 25.0 °C |
| June | 6.85 | 2.14 | 1.70 | 4.91 | 26.4 °C |
| July | 6.12 | 2.20 | 1.76 | 4.46 | 26.6 °C |
| August | 6.19 | 2.68 | 2.16 | 4.69 | 26.0 °C |
| September | 6.57 | 3.85 | 3.16 | 5.30 | 24.5 °C |
| October | 6.64 | 5.44 | 4.54 | 5.87 | 20.6 °C |
| November | 5.96 | 6.42 | 5.40 | 5.71 | 18.4 °C |
| December | 5.58 | 6.80 | 5.76 | 5.58 | 16.7 °C |
| Year | 6.39 avg | 4.32 avg | 1311 kWh | 1951 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 690 Wp of panels at 70°, versus 260 Wp at 17°. Here the lower tilt is the better winter choice — the sun stays high enough. Size your own system.
Row spacing in Sayyān
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.
2.4 mrow pitch at 70°
2.4 mrow pitch at 17°
How Sayyān compares in Yemen
Against the other 24 places in Yemen with climate data, for a fixed array at its best angle.
6thof 25 places in Yemen for sunshine, shared: 6.39 peak sun hours a day on flat ground.
+3%solar energy a year compared with the average place in Yemen: 1,951 against 1,887 kWh per kWp.
−1 mindaylight on the longest day, compared with Sanaa: 13 h 02 min against 13 h 02 min.
17°best year-round tilt here; across Yemen it runs from 14° in Aden to 18° in Sa'dah.
Of the 25 places in Yemen, Ataq gets the most sun (6.67 peak sun hours a day) and Bayt al Faqīh the least (6.05); Sayyān ranks joint 6th. In its darkest month, June, 1 kWp of off-grid panels at 70° makes 1.70 kWh a day here, against 1.63 kWh on average in Yemen. The shortest day lasts 11 h 14 min, +1 min compared with Sanaa.
Solar forecast for Sayyān, 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 Sayyān
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A free, live card for Sayyān: 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.