East Azerbaijan · Iran · 37.94° N · 45.98° E
Solar position in Īlkhchī
Sun position, daylight and the best solar panel angle for Īlkhchī — computed for 37.94° N, 45.98° E, 1315 m above sea level.
The sun right now
Sun in Īlkhchī today
Saturday, 24 October 2026 · local time UTC+3:30
| Event | Time | Direction / height |
|---|---|---|
| Astronomical dawn | 05:15 | sun 18° below horizon |
| Nautical dawn | 05:45 | 12° below |
| Civil dawn | 06:16 | 6° below |
| Sunrise | 06:43 | 104° ESE |
| Golden hour ends | 07:19 | sun 6° up |
| Solar noon | 12:10 | 40.3° high |
| Golden hour starts | 17:00 | sun 6° up |
| Sunset | 17:36 | 256° WSW |
| Civil dusk | 18:03 | 6° below |
| Nautical dusk | 18:34 | 12° below |
| Astronomical dusk | 19:04 | 18° below |
| Day length | 10 h 54 min | |
Sun path diagram for Īlkhchī
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 75.5° at solar noon in Īlkhchī; on the December solstice only 28.6°. Sunrise swings from 59° ENE in June to 120° ESE in December — a 61° 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 | 07:38 | 12:37 | 17:36 | 9 h 59 min | 32.2° |
| February | 07:08 | 12:39 | 18:11 | 11 h 02 min | 41.6° |
| March | 06:28 | 12:33 | 18:38 | 12 h 10 min | 52.4° |
| April | 05:42 | 12:24 | 19:07 | 13 h 24 min | 64.0° |
| May | 05:11 | 12:22 | 19:34 | 14 h 23 min | 72.3° |
| June | 05:03 | 12:27 | 19:51 | 14 h 48 min | 75.5° |
| July | 05:20 | 12:32 | 19:44 | 14 h 25 min | 72.5° |
| August | 05:46 | 12:29 | 19:11 | 13 h 25 min | 64.1° |
| September | 06:12 | 12:19 | 18:25 | 12 h 12 min | 52.7° |
| October | 06:40 | 12:10 | 17:40 | 11 h 00 min | 41.3° |
| November | 07:12 | 12:11 | 17:10 | 9 h 58 min | 32.1° |
| December | 07:38 | 12:24 | 17:10 | 9 h 32 min | 28.6° |
A year of daylight in Īlkhchī
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 Īlkhchī
Fixed array facing south (azimuth 180°). Energy per kWp from NASA POWER monthly climate, including clouds, temperature and snow reflection.
32°collects the most energy over a year: 1707 kWh per kWp.
65°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° | 1489 | 87% | 1.75 | 3.7× |
| 15° | 1645 | 96% | 2.43 | 2.6× |
| 30° | 1707 | 100% | 2.97 | 2.0× |
| 32° year-round best | 1707 | 100% | 3.03 | 1.9× |
| 38° = latitude | 1699 | 100% | 3.19 | 1.7× |
| 45° | 1670 | 98% | 3.33 | 1.6× |
| 60° | 1540 | 90% | 3.51 | 1.4× |
| 65° off-grid best | 1477 | 86% | 3.52 | 1.4× |
| 70° | 1405 | 82% | 3.51 | 1.4× |
| 90° | 1046 | 61% | 3.23 | 2.2× |
A fixed array in Īlkhchī produces the most over a year at 32°. The design month for an off-grid system is December: at 65° it makes 3.52 kWh per kWp a day, 16% more than at 32°, and costs 14% of the yearly total. Why steep panels win winter.
Off-grid solar in Īlkhchī at 70°
Daily energy of 1 kWp by month. Bars: panels at 70°. Line: panels at 32° (year-round best).
| Month | Sun hours, flat | Sun hours at 70° | kWh/kWp/day at 70° | at 32° | Mean temp. |
|---|---|---|---|---|---|
| January snow | 2.52 | 4.24 | 3.86 | 3.44 | -1.9 °C |
| February snow | 3.47 | 4.81 | 4.35 | 4.21 | 0.3 °C |
| March | 4.27 | 4.41 | 3.91 | 4.44 | 5.1 °C |
| April | 5.39 | 4.18 | 3.63 | 4.83 | 10.1 °C |
| May | 6.71 | 4.07 | 3.44 | 5.35 | 15.8 °C |
| June | 7.98 | 4.05 | 3.35 | 5.84 | 21.4 °C |
| July | 7.67 | 4.19 | 3.43 | 5.69 | 24.4 °C |
| August | 7.01 | 4.81 | 3.95 | 5.72 | 24.0 °C |
| September | 5.76 | 5.49 | 4.60 | 5.52 | 19.6 °C |
| October | 3.96 | 5.03 | 4.33 | 4.47 | 13.1 °C |
| November | 2.67 | 4.37 | 3.89 | 3.58 | 4.9 °C |
| December snow | 2.11 | 3.88 | 3.51 | 3.03 | -0.1 °C |
| Year | 4.97 avg | 4.46 avg | 1405 kWh | 1707 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 350 Wp of panels at 70°, versus 390 Wp at 32°. The steep array is 10% smaller for the same winter. Size your own system.
Row spacing in Īlkhchī
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.
4.6 mrow pitch at 70°
3.9 mrow pitch at 32°
How Īlkhchī compares in Iran
Against the other 422 places in Iran with climate data, for a fixed array at its best angle.
323rdof 423 places in Iran for sunshine, shared: 4.97 peak sun hours a day on flat ground.
−3%solar energy a year compared with the average place in Iran: 1,708 against 1,760 kWh per kWp.
+13 mindaylight on the longest day, compared with Tehran: 14 h 48 min against 14 h 35 min.
32°best year-round tilt here; across Iran it runs from 24° in Kīsh to 33° in Khūy.
Of the 423 places in Iran, Jālq gets the most sun (6.10 peak sun hours a day) and Bandar-e Anzalī the least (3.92); Īlkhchī ranks joint 323rd. In its darkest month, June, 1 kWp of off-grid panels at 70° makes 3.35 kWh a day here, against 2.96 kWh on average in Iran. The shortest day lasts 9 h 32 min, −12 min compared with Tehran.
Solar forecast for Īlkhchī, 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 Īlkhchī
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A free, live card for Īlkhchī: 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.