P'yŏngan-bukto · North Korea · 39.98° N · 125.25° E
Solar position in Kusŏng-si
Sun position, daylight and the best solar panel angle for Kusŏng-si — computed for 39.98° N, 125.25° E, 79 m above sea level.
The sun right now
Sun in Kusŏng-si today
Sunday, 25 October 2026 · local time UTC+9
| Event | Time | Direction / height |
|---|---|---|
| Astronomical dawn | 05:28 | sun 18° below horizon |
| Nautical dawn | 06:00 | 12° below |
| Civil dawn | 06:32 | 6° below |
| Sunrise | 06:59 | 105° ESE |
| Golden hour ends | 07:37 | sun 6° up |
| Solar noon | 12:22 | 38.0° high |
| Golden hour starts | 17:08 | sun 6° up |
| Sunset | 17:45 | 255° WSW |
| Civil dusk | 18:13 | 6° below |
| Nautical dusk | 18:45 | 12° below |
| Astronomical dusk | 19:16 | 18° below |
| Day length | 10 h 46 min | |
Sun path diagram for Kusŏng-si
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 73.5° at solar noon in Kusŏng-si; on the December solstice only 26.6°. Sunrise swings from 58° ENE in June to 120° ESE in December — a 63° 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 | 07:56 | 12:50 | 17:44 | 9 h 48 min | 30.1° |
| February | 07:24 | 12:52 | 18:21 | 10 h 57 min | 39.5° |
| March | 06:41 | 12:46 | 18:51 | 12 h 10 min | 50.2° |
| April | 05:53 | 12:37 | 19:23 | 13 h 30 min | 61.9° |
| May | 05:19 | 12:35 | 19:52 | 14 h 33 min | 70.2° |
| June | 05:10 | 12:40 | 20:11 | 15 h 01 min | 73.5° |
| July | 05:27 | 12:45 | 20:03 | 14 h 36 min | 70.5° |
| August | 05:55 | 12:42 | 19:27 | 13 h 32 min | 62.2° |
| September | 06:25 | 12:31 | 18:38 | 12 h 13 min | 50.8° |
| October | 06:55 | 12:23 | 17:51 | 10 h 56 min | 39.4° |
| November | 07:30 | 12:24 | 17:18 | 9 h 48 min | 30.2° |
| December | 07:56 | 12:36 | 17:16 | 9 h 20 min | 26.6° |
A year of daylight in Kusŏng-si
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 Kusŏng-si
Fixed array facing south (azimuth 180°). Energy per kWp from NASA POWER monthly climate, including clouds, temperature and snow reflection.
39°collects the most energy over a year: 1434 kWh per kWp.
35°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 | July kWh/kWp/day | Best ÷ worst month |
|---|---|---|---|---|
| 0° | 1171 | 82% | 3.47 | 2.7× |
| 15° | 1332 | 93% | 3.51 | 1.9× |
| 30° | 1420 | 99% | 3.37 | 1.5× |
| 35° off-grid best | 1431 | 100% | 3.29 | 1.4× |
| 39° year-round best | 1434 | 100% | 3.21 | 1.5× |
| 40° = latitude | 1434 | 100% | 3.19 | 1.5× |
| 45° | 1428 | 100% | 3.07 | 1.5× |
| 60° | 1358 | 95% | 2.62 | 1.7× |
| 70° | 1270 | 89% | 2.26 | 2.0× |
| 90° | 1010 | 70% | 1.46 | 2.8× |
A fixed array in Kusŏng-si produces the most over a year at 39°. The design month for an off-grid system is July: at 35° it makes 3.29 kWh per kWp a day, 2% more than at 39°, and costs 0% of the yearly total. Why steep panels win winter.
Off-grid solar in Kusŏng-si at 70°
Daily energy of 1 kWp by month. Bars: panels at 70°. Line: panels at 39° (year-round best).
| Month | Sun hours, flat | Sun hours at 70° | kWh/kWp/day at 70° | at 39° | Mean temp. |
|---|---|---|---|---|---|
| January snow | 2.36 | 4.55 | 4.24 | 3.78 | -8.3 °C |
| February snow | 3.10 | 4.78 | 4.41 | 4.19 | -5.0 °C |
| March | 4.28 | 4.68 | 4.22 | 4.72 | 0.8 °C |
| April | 5.01 | 4.06 | 3.55 | 4.54 | 7.8 °C |
| May | 5.58 | 3.61 | 3.06 | 4.39 | 14.7 °C |
| June | 5.16 | 3.09 | 2.55 | 3.78 | 19.9 °C |
| July | 4.34 | 2.78 | 2.26 | 3.21 | 22.9 °C |
| August | 4.49 | 3.30 | 2.70 | 3.60 | 23.0 °C |
| September | 4.38 | 4.19 | 3.53 | 4.17 | 18.3 °C |
| October | 3.38 | 4.40 | 3.82 | 4.00 | 11.0 °C |
| November | 2.32 | 3.94 | 3.53 | 3.36 | 2.4 °C |
| December snow | 2.02 | 4.27 | 3.95 | 3.44 | -6.0 °C |
| Year | 3.87 avg | 3.97 avg | 1270 kWh | 1434 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 520 Wp of panels at 70°, versus 370 Wp at 39°. Here the lower tilt is the better winter choice — the sun stays high enough. Size your own system.
Row spacing in Kusŏng-si
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.
5.0 mrow pitch at 70°
4.5 mrow pitch at 39°
How Kusŏng-si compares in North Korea
Against the other 96 places in North Korea with climate data, for a fixed array at its best angle.
44thof 97 places in North Korea for sunshine, shared: 3.87 peak sun hours a day on flat ground.
+1%solar energy a year compared with the average place in North Korea: 1,434 against 1,424 kWh per kWp.
+6 mindaylight on the longest day, compared with Pyongyang: 15 h 01 min against 14 h 55 min.
39°best year-round tilt here; across North Korea it runs from 34° in Ongjin to 44° in Namyang-nodongjagu.
Of the 97 places in North Korea, Sinp’o and one other place get the most sun (3.91 peak sun hours a day) and Ŏrang and one other place the least (3.70); Kusŏng-si ranks joint 44th. In its darkest month, July, 1 kWp of off-grid panels at 70° makes 2.26 kWh a day here, against 2.28 kWh on average in North Korea. The shortest day lasts 9 h 20 min, −6 min compared with Pyongyang.
Solar forecast for Kusŏng-si, 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 Kusŏng-si
What is the best solar panel angle in Kusŏng-si?
What time is sunrise and sunset in Kusŏng-si today?
How many peak sun hours does Kusŏng-si get?
How high does the sun get in Kusŏng-si?
Is Kusŏng-si a good place for solar panels?
Places near Kusŏng-si
Put this on your site
A free, live card for Kusŏng-si: 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.