North Khorasan · Iran · 37.08° N · 57.51° E
Solar position in Esfarāyen
Sun position, daylight and the best solar panel angle for Esfarāyen — computed for 37.08° N, 57.51° E, 1253 m above sea level.
The sun right now
Sun in Esfarāyen today
Saturday, 24 October 2026 · local time UTC+3:30
| Event | Time | Direction / height |
|---|---|---|
| Astronomical dawn | 04:28 | sun 18° below horizon |
| Nautical dawn | 04:59 | 12° below |
| Civil dawn | 05:29 | 6° below |
| Sunrise | 05:55 | 104° ESE |
| Golden hour ends | 06:31 | sun 6° up |
| Solar noon | 11:23 | 41.1° high |
| Golden hour starts | 16:16 | sun 6° up |
| Sunset | 16:51 | 256° WSW |
| Civil dusk | 17:18 | 6° below |
| Nautical dusk | 17:48 | 12° below |
| Astronomical dusk | 18:18 | 18° below |
| Day length | 10 h 56 min | |
Sun path diagram for Esfarāyen
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 76.4° at solar noon in Esfarāyen; on the December solstice only 29.5°. 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 | 06:50 | 11:51 | 16:52 | 10 h 03 min | 33.1° |
| February | 06:21 | 11:53 | 17:25 | 11 h 04 min | 42.4° |
| March | 05:42 | 11:47 | 17:52 | 12 h 10 min | 53.2° |
| April | 04:58 | 11:38 | 18:19 | 13 h 22 min | 64.8° |
| May | 04:27 | 11:36 | 18:46 | 14 h 19 min | 73.1° |
| June | 04:20 | 11:41 | 19:03 | 14 h 43 min | 76.4° |
| July | 04:36 | 11:46 | 18:56 | 14 h 20 min | 73.4° |
| August | 05:01 | 11:43 | 18:24 | 13 h 23 min | 65.0° |
| September | 05:26 | 11:32 | 17:38 | 12 h 12 min | 53.6° |
| October | 05:53 | 11:24 | 16:55 | 11 h 03 min | 42.2° |
| November | 06:24 | 11:25 | 16:26 | 10 h 02 min | 33.0° |
| December | 06:49 | 11:37 | 16:26 | 9 h 37 min | 29.5° |
A year of daylight in Esfarāyen
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 Esfarāyen
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: 1753 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° | 1531 | 87% | 1.85 | 3.5× |
| 15° | 1692 | 97% | 2.57 | 2.5× |
| 30° | 1752 | 100% | 3.13 | 1.9× |
| 31° year-round best | 1753 | 100% | 3.16 | 1.9× |
| 37° = latitude | 1746 | 100% | 3.33 | 1.7× |
| 45° | 1711 | 98% | 3.49 | 1.6× |
| 60° | 1571 | 90% | 3.63 | 1.4× |
| 62° off-grid best | 1545 | 88% | 3.63 | 1.4× |
| 70° | 1428 | 81% | 3.60 | 1.5× |
| 90° | 1049 | 60% | 3.24 | 2.4× |
A fixed array in Esfarāyen produces the most over a year at 31°. The design month for an off-grid system is December: at 62° it makes 3.63 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 Esfarāyen 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 | 2.44 | 4.14 | 3.75 | 3.31 | -0.1 °C |
| February | 3.28 | 4.32 | 3.88 | 3.89 | 1.6 °C |
| March | 4.45 | 4.56 | 4.01 | 4.58 | 6.9 °C |
| April | 5.66 | 4.33 | 3.73 | 5.03 | 12.5 °C |
| May | 6.89 | 4.09 | 3.43 | 5.42 | 18.6 °C |
| June | 8.01 | 3.99 | 3.27 | 5.81 | 23.8 °C |
| July | 7.85 | 4.15 | 3.38 | 5.77 | 25.8 °C |
| August | 7.32 | 4.90 | 4.03 | 5.95 | 23.9 °C |
| September | 6.07 | 5.72 | 4.78 | 5.78 | 19.7 °C |
| October | 4.39 | 5.63 | 4.83 | 4.96 | 13.7 °C |
| November | 2.94 | 4.82 | 4.26 | 3.90 | 6.0 °C |
| December | 2.24 | 4.00 | 3.60 | 3.16 | 1.1 °C |
| Year | 5.14 avg | 4.55 avg | 1428 kWh | 1753 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 370 Wp at 31°. The steep array is 3% smaller for the same winter. Size your own system.
Row spacing in Esfarāyen
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 Esfarāyen compares in Iran
Against the other 422 places in Iran with climate data, for a fixed array at its best angle.
274thof 423 places in Iran for sunshine, shared: 5.14 peak sun hours a day on flat ground.
±0%solar energy a year compared with the average place in Iran: 1,753 against 1,760 kWh per kWp.
+8 mindaylight on the longest day, compared with Tehran: 14 h 43 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); Esfarāyen ranks joint 274th. In its darkest month, June, 1 kWp of off-grid panels at 70° makes 3.27 kWh a day here, against 2.96 kWh on average in Iran. The shortest day lasts 9 h 37 min, −8 min compared with Tehran.
Solar forecast for Esfarāyen, 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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A free, live card for Esfarāyen: 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.