North Khorasan · Iran · 37.47° N · 57.33° E
Solar position in Bojnūrd
Sun position, daylight and the best solar panel angle for Bojnūrd — computed for 37.47° N, 57.33° E, 1069 m above sea level.
The sun right now
Sun in Bojnūrd today
Sunday, 25 October 2026 · local time UTC+3:30
| Event | Time | Direction / height |
|---|---|---|
| Astronomical dawn | 04:30 | sun 18° below horizon |
| Nautical dawn | 05:00 | 12° below |
| Civil dawn | 05:31 | 6° below |
| Sunrise | 05:58 | 105° ESE |
| Golden hour ends | 06:34 | sun 6° up |
| Solar noon | 11:24 | 40.4° high |
| Golden hour starts | 16:14 | sun 6° up |
| Sunset | 16:50 | 255° WSW |
| Civil dusk | 17:17 | 6° below |
| Nautical dusk | 17:48 | 12° below |
| Astronomical dusk | 18:18 | 18° below |
| Day length | 10 h 53 min | |
Sun path diagram for Bojnūrd
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 76.0° at solar noon in Bojnūrd; on the December solstice only 29.1°. Sunrise swings from 59° ENE in June to 119° ESE in December — a 60° 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 | 06:51 | 11:52 | 16:52 | 10 h 01 min | 32.7° |
| February | 06:22 | 11:54 | 17:26 | 11 h 03 min | 42.0° |
| March | 05:43 | 11:48 | 17:53 | 12 h 10 min | 52.8° |
| April | 04:58 | 11:39 | 18:21 | 13 h 23 min | 64.4° |
| May | 04:27 | 11:37 | 18:47 | 14 h 21 min | 72.7° |
| June | 04:19 | 11:42 | 19:05 | 14 h 45 min | 76.0° |
| July | 04:35 | 11:47 | 18:58 | 14 h 22 min | 73.0° |
| August | 05:01 | 11:43 | 18:25 | 13 h 24 min | 64.6° |
| September | 05:27 | 11:33 | 17:39 | 12 h 12 min | 53.2° |
| October | 05:54 | 11:25 | 16:55 | 11 h 02 min | 41.8° |
| November | 06:26 | 11:26 | 16:26 | 10 h 00 min | 32.6° |
| December | 06:51 | 11:38 | 16:25 | 9 h 35 min | 29.1° |
A year of daylight in Bojnūrd
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 Bojnūrd
Fixed array facing south (azimuth 180°). Energy per kWp from NASA POWER monthly climate, including clouds, temperature and snow reflection.
31°collects the most energy over a year: 1702 kWh per kWp.
62°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° | 1492 | 88% | 1.74 | 3.7× |
| 15° | 1645 | 97% | 2.39 | 2.6× |
| 30° | 1702 | 100% | 2.90 | 2.0× |
| 31° year-round best | 1702 | 100% | 2.93 | 2.0× |
| 37° = latitude | 1695 | 100% | 3.08 | 1.9× |
| 45° | 1660 | 98% | 3.23 | 1.7× |
| 60° | 1523 | 89% | 3.36 | 1.5× |
| 62° off-grid best | 1498 | 88% | 3.36 | 1.5× |
| 70° | 1384 | 81% | 3.33 | 1.4× |
| 90° | 1016 | 60% | 2.99 | 2.2× |
A fixed array in Bojnūrd produces the most over a year at 31°. The design month for an off-grid system is December: at 62° it makes 3.36 kWh per kWp a day, 15% more than at 31°, and costs 12% of the yearly total. Why steep panels win winter.
Off-grid solar in Bojnūrd at 70°
Daily energy of 1 kWp by month. Bars: panels at 70°. Line: panels at 31° (year-round best).
| Month | Sun hours, flat | Sun hours at 70° | kWh/kWp/day at 70° | at 31° | Mean temp. |
|---|---|---|---|---|---|
| January snow | 2.30 | 3.83 | 3.47 | 3.08 | -0.6 °C |
| February | 3.08 | 3.99 | 3.60 | 3.62 | 1.0 °C |
| March | 4.27 | 4.38 | 3.86 | 4.40 | 6.2 °C |
| April | 5.45 | 4.20 | 3.62 | 4.85 | 11.7 °C |
| May | 6.74 | 4.06 | 3.41 | 5.35 | 17.7 °C |
| June | 7.91 | 4.01 | 3.30 | 5.79 | 22.8 °C |
| July | 7.75 | 4.17 | 3.40 | 5.75 | 24.9 °C |
| August | 7.21 | 4.88 | 4.03 | 5.91 | 23.2 °C |
| September | 5.94 | 5.63 | 4.72 | 5.69 | 19.1 °C |
| October | 4.25 | 5.45 | 4.69 | 4.82 | 13.0 °C |
| November | 2.81 | 4.58 | 4.06 | 3.72 | 5.4 °C |
| December | 2.10 | 3.69 | 3.33 | 2.93 | 0.6 °C |
| Year | 4.99 avg | 4.41 avg | 1384 kWh | 1702 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 360 Wp of panels at 70°, versus 400 Wp at 31°. The steep array is 11% smaller for the same winter. Size your own system.
Row spacing in Bojnūrd
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.
4.5 mrow pitch at 70°
3.8 mrow pitch at 31°
How Bojnūrd compares in Iran
Against the other 422 places in Iran with climate data, for a fixed array at its best angle.
318thof 423 places in Iran for sunshine, shared: 4.99 peak sun hours a day on flat ground.
−3%solar energy a year compared with the average place in Iran: 1,702 against 1,760 kWh per kWp.
+10 mindaylight on the longest day, compared with Tehran: 14 h 45 min against 14 h 35 min.
31°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); Bojnūrd ranks joint 318th. In its darkest month, June, 1 kWp of off-grid panels at 70° makes 3.30 kWh a day here, against 2.96 kWh on average in Iran. The shortest day lasts 9 h 35 min, −10 min compared with Tehran.
Solar forecast for Bojnūrd, 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 Bojnūrd
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Places near Bojnūrd
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A free, live card for Bojnūrd: 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.