Solarposition.org

Golestan · Iran · 37.25° N · 55.17° E

Solar position in Gonbad-e Kāvūs

Sun position, daylight and the best solar panel angle for Gonbad-e Kāvūs — computed for 37.25° N, 55.17° E, 38 m above sea level.

Sunrise today06:05104° ESE
Sunset today17:01256° WSW
Best panel angle32°year-round, facing south
Off-grid angle62°best for the darkest month

The sun right now

Azimuth180.0°
Elevation41.0°
At solar noon, 11:33Open on the sun map

Sun in Gonbad-e Kāvūs today

Saturday, 24 October 2026 · local time UTC+3:30

EventTimeDirection / height
Astronomical dawn04:38sun 18° below horizon
Nautical dawn05:0812° below
Civil dawn05:386° below
Sunrise06:05104° ESE
Golden hour ends06:41sun 6° up
Solar noon11:3341.0° high
Golden hour starts16:25sun 6° up
Sunset17:01256° WSW
Civil dusk17:276° below
Nautical dusk17:5812° below
Astronomical dusk18:2818° below
Day length10 h 55 min

Sun path diagram for Gonbad-e Kāvūs

Where the sun stands in the sky: the centre is straight overhead, the outer ring is the horizon. Numbers mark local clock hours.

15°30°45°60°75°N30°60°E120°150°S210°240°W300°330°June solstice5678910111213141516171819EquinoxDecember solstice8910111213141516Today
  • June solstice
  • Equinox
  • December solstice
  • Today

On the June solstice the sun reaches 76.2° at solar noon in Gonbad-e Kāvūs; on the December solstice only 29.3°. 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.

MonthSunriseSolar noonSunsetDay lengthNoon elevation
January06:5912:0017:0110 h 02 min32.9°
February06:3112:0317:3511 h 04 min42.3°
March05:5111:5618:0112 h 10 min53.1°
April05:0711:4818:2913 h 22 min64.7°
May04:3611:4518:5514 h 19 min73.0°
June04:2911:5119:1314 h 44 min76.2°
July04:4511:5519:0614 h 21 min73.2°
August05:1011:5218:3313 h 23 min64.8°
September05:3611:4217:4812 h 12 min53.4°
October06:0211:3317:0411 h 02 min42.0°
November06:3411:3416:3510 h 01 min32.8°
December06:5911:4716:359 h 36 min29.3°

A year of daylight in Gonbad-e Kāvūs

Each column is one day of 2026. Bright: sun above the horizon; soft: civil twilight; line: solar noon. Steps are daylight saving time changes.

00:0003:0006:0009:0012:0015:0018:0021:0000:00JanFebMarAprMayJunJulAugSepOctNovDec

Best solar panel angle in Gonbad-e Kāvūs

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: 1620 kWh per kWp.

62°gives the most in the darkest month — the one an off-grid system is sized for.

40%50%60%70%80%90%100%0°10°20°30°40°50°60°70°80°90°Best year-round 32°Best worst-month 62°70°Yearly energyWorst-month energy
  • Yearly energy
  • Worst-month energy
TiltkWh/kWp per yearShare of best yearDecember kWh/kWp/dayBest ÷ worst month
0°140287%1.803.3×
15°155796%2.532.3×
30°1619100%3.111.8×
32° year-round best1620100%3.171.7×
37° = latitude1616100%3.311.6×
45°158798%3.481.4×
60°146490%3.631.3×
62° off-grid best144189%3.631.3×
70°133582%3.611.4×
90°99161%3.252.1×

A fixed array in Gonbad-e Kāvūs produces the most over a year at 32°. 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 32°, and costs 11% of the yearly total. Why steep panels win winter.

Off-grid solar in Gonbad-e Kāvūs at 70°

Daily energy of 1 kWp by month. Bars: panels at 70°. Line: panels at 32° (year-round best).

0123456January: 3.74 (70°)3.7JanFebruary: 3.80 (70°)3.8FebMarch: 3.76 (70°)3.8MarApril: 3.36 (70°)3.4AprMay: 3.23 (70°)3.2MayJune: 3.13 (70°)3.1JunJuly: 3.16 (70°)3.2JulAugust: 3.66 (70°)3.7AugSeptember: 4.23 (70°)4.2SepOctober: 4.30 (70°)4.3OctNovember: 3.95 (70°)3.9NovDecember: 3.61 (70°)3.6Dec32°
MonthSun hours, flatSun hours at 70°kWh/kWp/day at 70°at 32°Mean temp.
January2.484.213.743.385.0 °C
February3.224.303.803.816.3 °C
March4.244.353.764.3011.1 °C
April5.143.973.364.4816.1 °C
May6.443.923.235.0122.4 °C
June7.443.883.135.3727.2 °C
July7.053.953.165.1629.6 °C
August6.644.543.665.3028.7 °C
September5.525.154.235.1224.5 °C
October4.065.104.304.4718.1 °C
November2.814.553.953.6610.8 °C
December2.224.083.613.176.3 °C
Year4.78 avg4.33 avg1335 kWh1620 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 380 Wp of panels at 70°, versus 370 Wp at 32°. Here the lower tilt is the better winter choice — the sun stays high enough. Size your own system.

Row spacing in Gonbad-e Kāvūs

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°

3.9 mrow pitch at 32°

Row spacing calculator

How Gonbad-e Kāvūs compares in Iran

Against the other 422 places in Iran with climate data, for a fixed array at its best angle.

367thof 423 places in Iran for sunshine, shared: 4.78 peak sun hours a day on flat ground.

−8%solar energy a year compared with the average place in Iran: 1,620 against 1,760 kWh per kWp.

+9 mindaylight on the longest day, compared with Tehran: 14 h 44 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); Gonbad-e Kāvūs ranks joint 367th. In its darkest month, June, 1 kWp of off-grid panels at 70° makes 3.13 kWh a day here, against 2.96 kWh on average in Iran. The shortest day lasts 9 h 36 min, −9 min compared with Tehran.

The sunniest places in Iran

Solar forecast for Gonbad-e Kāvūs, next 48 hours

Expected output of 1 kWp at 70°, computed from the ICON-EU weather model of the Deutscher Wetterdienst (DWD), Europe.

Loading the latest forecast…

Questions about the sun in Gonbad-e Kāvūs

What is the best solar panel angle in Gonbad-e Kāvūs?
For a fixed array facing south, the best year-round tilt in Gonbad-e Kāvūs is 32°, worth about 1620 kWh per kWp a year. An off-grid system that has to get through December does better at about 62°.
What time is sunrise and sunset in Gonbad-e Kāvūs today?
On 24 October 2026 the sun rises at 06:05 and sets at 17:01 local time (UTC+3:30), giving 10 h 55 min of daylight. Solar noon is at 11:33.
How many peak sun hours does Gonbad-e Kāvūs get?
On a flat surface 4.8 hours a day averaged over the year, from 2.2 in December to 7.4 in June. Panels tilted at 70° receive 3.9 sun hours a day in June.
How high does the sun get in Gonbad-e Kāvūs?
At solar noon the sun stands 76.2° above the horizon on the June solstice and 29.3° on the December solstice.
Is Gonbad-e Kāvūs a good place for solar panels?
With 4.8 peak sun hours a day on flat ground, Gonbad-e Kāvūs ranks joint 367th of 423 places in Iran for sunshine. A 1 kWp array at the best angle (32°) makes about 1,620 kWh a year here, 8% less than the average place in Iran.

Places near Gonbad-e Kāvūs

All places in Iran

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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.