Govi-Altai Province · Mongolia · 46.37° N · 96.26° E
Solar position in Altai
Sun position, daylight and the best solar panel angle for Altai — computed for 46.37° N, 96.26° E, 2156 m above sea level.
The sun right now
Sun in Altai today
Sunday, 25 October 2026 · local time UTC+7
| Event | Time | Direction / height |
|---|---|---|
| Astronomical dawn | 05:24 | sun 18° below horizon |
| Nautical dawn | 05:59 | 12° below |
| Civil dawn | 06:34 | 6° below |
| Sunrise | 07:05 | 107° ESE |
| Golden hour ends | 07:48 | sun 6° up |
| Solar noon | 12:18 | 31.5° high |
| Golden hour starts | 16:49 | sun 6° up |
| Sunset | 17:31 | 253° WSW |
| Civil dusk | 18:02 | 6° below |
| Nautical dusk | 18:37 | 12° below |
| Astronomical dusk | 19:12 | 18° below |
| Day length | 10 h 26 min | |
Sun path diagram for Altai
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 67.1° at solar noon in Altai; on the December solstice only 20.2°. Sunrise swings from 54° NE in June to 124° SE in December — a 70° 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 | 08:10 | 12:46 | 17:22 | 9 h 13 min | 23.8° |
| February | 07:29 | 12:48 | 18:08 | 10 h 40 min | 33.1° |
| March | 06:36 | 12:42 | 18:48 | 12 h 12 min | 43.9° |
| April | 05:38 | 12:33 | 19:30 | 13 h 52 min | 55.5° |
| May | 04:55 | 12:31 | 20:08 | 15 h 13 min | 63.8° |
| June | 04:42 | 12:36 | 20:30 | 15 h 48 min | 67.1° |
| July | 05:03 | 12:41 | 20:18 | 15 h 16 min | 64.1° |
| August | 05:40 | 12:38 | 19:34 | 13 h 54 min | 55.7° |
| September | 06:20 | 12:27 | 18:35 | 12 h 15 min | 44.3° |
| October | 07:00 | 12:19 | 17:38 | 10 h 38 min | 32.9° |
| November | 07:44 | 12:20 | 16:56 | 9 h 12 min | 23.7° |
| December | 08:15 | 12:32 | 16:50 | 8 h 35 min | 20.2° |
A year of daylight in Altai
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 Altai
Fixed array facing south (azimuth 180°). Energy per kWp from NASA POWER monthly climate, including clouds, temperature and snow reflection.
44°collects the most energy over a year: 1818 kWh per kWp.
68°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° | 1396 | 77% | 1.28 | 4.7× |
| 15° | 1632 | 90% | 2.11 | 3.0× |
| 30° | 1775 | 98% | 2.83 | 2.2× |
| 44° year-round best | 1818 | 100% | 3.36 | 1.8× |
| 45° | 1818 | 100% | 3.39 | 1.7× |
| 46° = latitude | 1817 | 100% | 3.42 | 1.7× |
| 60° | 1759 | 97% | 3.74 | 1.5× |
| 68° off-grid best | 1688 | 93% | 3.84 | 1.5× |
| 70° | 1665 | 92% | 3.85 | 1.5× |
| 90° | 1363 | 75% | 3.77 | 2.2× |
A fixed array in Altai produces the most over a year at 44°. The design month for an off-grid system is December: at 68° it makes 3.84 kWh per kWp a day, 14% more than at 44°, and costs 7% of the yearly total. Why steep panels win winter.
Off-grid solar in Altai at 70°
Daily energy of 1 kWp by month. Bars: panels at 70°. Line: panels at 44° (year-round best).
| Month | Sun hours, flat | Sun hours at 70° | kWh/kWp/day at 70° | at 44° | Mean temp. |
|---|---|---|---|---|---|
| January snow | 1.93 | 4.67 | 4.50 | 3.98 | -17.5 °C |
| February snow | 3.01 | 5.49 | 5.22 | 4.89 | -14.0 °C |
| March snow | 4.36 | 6.13 | 5.65 | 5.66 | -5.6 °C |
| April | 6.01 | 5.51 | 4.92 | 5.90 | 3.0 °C |
| May | 7.10 | 4.99 | 4.35 | 5.78 | 8.8 °C |
| June | 7.11 | 4.45 | 3.77 | 5.25 | 15.4 °C |
| July | 6.78 | 4.45 | 3.74 | 5.11 | 17.8 °C |
| August | 6.04 | 4.89 | 4.16 | 5.23 | 15.5 °C |
| September | 5.05 | 5.77 | 5.04 | 5.61 | 8.5 °C |
| October snow | 3.47 | 5.83 | 5.26 | 5.14 | 0.4 °C |
| November snow | 2.03 | 4.65 | 4.34 | 3.89 | -8.1 °C |
| December snow | 1.53 | 4.03 | 3.85 | 3.36 | -15.5 °C |
| Year | 4.54 avg | 5.07 avg | 1665 kWh | 1818 kWh |
Sizing example. To run a 1 kWh-per-day load through July on LiFePO4 batteries (charge controller, battery and inverter losses included) you need about 320 Wp of panels at 70°, versus 350 Wp at 44°. The steep array is 10% smaller for the same winter. Size your own system.
Row spacing in Altai
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.
6.8 mrow pitch at 70°
6.0 mrow pitch at 44°
How Altai compares in Mongolia
Against the other 23 places in Mongolia with climate data, for a fixed array at its best angle.
4thof 24 places in Mongolia for sunshine: 4.54 peak sun hours a day on flat ground.
+3%solar energy a year compared with the average place in Mongolia: 1,818 against 1,757 kWh per kWp.
−14 mindaylight on the longest day, compared with Ulan Bator: 15 h 48 min against 16 h 02 min.
44°best year-round tilt here; across Mongolia it runs from 43° in Ulaangom to 48° in Mörön.
Of the 24 places in Mongolia, Bogd gets the most sun (4.71 peak sun hours a day) and Sühbaatar the least (3.82); Altai ranks 4th. In its darkest month, July, 1 kWp of off-grid panels at 70° makes 3.74 kWh a day here, against 3.47 kWh on average in Mongolia. The shortest day lasts 8 h 35 min, +13 min compared with Ulan Bator.
Solar forecast for Altai, 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 Altai
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Places near Altai
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A free, live card for Altai: 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.