Chungcheongnam-do · South Korea · 36.60° N · 126.67° E
Solar position in Hongseong
Sun position, daylight and the best solar panel angle for Hongseong — computed for 36.60° N, 126.67° E, 31 m above sea level.
The sun right now
Sun in Hongseong today
Sunday, 25 October 2026 · local time UTC+9
| Event | Time | Direction / height |
|---|---|---|
| Astronomical dawn | 05:22 | sun 18° below horizon |
| Nautical dawn | 05:52 | 12° below |
| Civil dawn | 06:23 | 6° below |
| Sunrise | 06:49 | 104° ESE |
| Golden hour ends | 07:25 | sun 6° up |
| Solar noon | 12:17 | 41.3° high |
| Golden hour starts | 17:09 | sun 6° up |
| Sunset | 17:44 | 255° WSW |
| Civil dusk | 18:11 | 6° below |
| Nautical dusk | 18:41 | 12° below |
| Astronomical dusk | 19:11 | 18° below |
| Day length | 10 h 55 min | |
Sun path diagram for Hongseong
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 76.8° at solar noon in Hongseong; on the December solstice only 30.0°. Sunrise swings from 60° ENE in June to 119° ESE in December — a 59° 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 | 07:42 | 12:44 | 17:46 | 10 h 04 min | 33.5° |
| February | 07:14 | 12:47 | 18:19 | 11 h 05 min | 42.8° |
| March | 06:36 | 12:40 | 18:45 | 12 h 09 min | 53.6° |
| April | 05:52 | 12:32 | 19:12 | 13 h 20 min | 65.2° |
| May | 05:22 | 12:29 | 19:38 | 14 h 16 min | 73.6° |
| June | 05:15 | 12:35 | 19:55 | 14 h 40 min | 76.8° |
| July | 05:30 | 12:39 | 19:48 | 14 h 18 min | 73.9° |
| August | 05:55 | 12:36 | 19:17 | 13 h 22 min | 65.5° |
| September | 06:20 | 12:26 | 18:32 | 12 h 12 min | 54.1° |
| October | 06:45 | 12:17 | 17:49 | 11 h 04 min | 42.7° |
| November | 07:16 | 12:18 | 17:21 | 10 h 04 min | 33.5° |
| December | 07:41 | 12:31 | 17:20 | 9 h 39 min | 30.0° |
A year of daylight in Hongseong
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 Hongseong
Fixed array facing south (azimuth 180°). Energy per kWp from NASA POWER monthly climate, including clouds, temperature and snow reflection.
33°collects the most energy over a year: 1345 kWh per kWp.
45°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° | 1170 | 87% | 1.70 | 2.7× |
| 15° | 1293 | 96% | 2.26 | 2.1× |
| 30° | 1344 | 100% | 2.68 | 1.7× |
| 33° year-round best | 1345 | 100% | 2.75 | 1.6× |
| 37° = latitude | 1343 | 100% | 2.82 | 1.6× |
| 45° off-grid best | 1321 | 98% | 2.94 | 1.5× |
| 60° | 1225 | 91% | 3.02 | 1.7× |
| 70° | 1124 | 84% | 2.98 | 1.8× |
| 90° | 852 | 63% | 2.65 | 2.3× |
A fixed array in Hongseong produces the most over a year at 33°. The design month for an off-grid system is December: at 45° it makes 2.94 kWh per kWp a day, 7% more than at 33°, and costs 2% of the yearly total. Why steep panels win winter.
Off-grid solar in Hongseong at 70°
Daily energy of 1 kWp by month. Bars: panels at 70°. Line: panels at 33° (year-round best).
| Month | Sun hours, flat | Sun hours at 70° | kWh/kWp/day at 70° | at 33° | Mean temp. |
|---|---|---|---|---|---|
| January snow | 2.32 | 3.66 | 3.32 | 3.05 | -0.8 °C |
| February | 3.18 | 4.03 | 3.63 | 3.73 | 0.7 °C |
| March | 4.32 | 4.36 | 3.88 | 4.46 | 4.5 °C |
| April | 5.07 | 3.87 | 3.35 | 4.51 | 9.9 °C |
| May | 5.57 | 3.42 | 2.88 | 4.41 | 15.6 °C |
| June | 5.15 | 2.98 | 2.45 | 3.86 | 20.5 °C |
| July | 4.30 | 2.63 | 2.13 | 3.22 | 23.9 °C |
| August | 4.53 | 3.16 | 2.56 | 3.60 | 25.1 °C |
| September | 4.16 | 3.68 | 3.06 | 3.76 | 20.9 °C |
| October | 3.60 | 4.24 | 3.62 | 3.86 | 15.0 °C |
| November | 2.46 | 3.60 | 3.15 | 3.04 | 8.4 °C |
| December | 2.05 | 3.32 | 2.98 | 2.75 | 1.6 °C |
| Year | 3.89 avg | 3.58 avg | 1124 kWh | 1345 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 550 Wp of panels at 70°, versus 430 Wp at 33°. Here the lower tilt is the better winter choice — the sun stays high enough. Size your own system.
Row spacing in Hongseong
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.
4.4 mrow pitch at 70°
3.8 mrow pitch at 33°
How Hongseong compares in South Korea
Against the other 144 places in South Korea with climate data, for a fixed array at its best angle.
49thof 145 places in South Korea for sunshine, shared: 3.90 peak sun hours a day on flat ground.
−1%solar energy a year compared with the average place in South Korea: 1,345 against 1,356 kWh per kWp.
−6 mindaylight on the longest day, compared with Seoul: 14 h 40 min against 14 h 46 min.
33°best year-round tilt here; across South Korea it runs from 27° in Seogwipo to 37° in Uijeongbu-si.
Of the 145 places in South Korea, Tongyeong gets the most sun (4.04 peak sun hours a day) and Kosong the least (3.76); Hongseong ranks joint 49th. In its darkest month, July, 1 kWp of off-grid panels at 70° makes 2.13 kWh a day here, against 2.12 kWh on average in South Korea. The shortest day lasts 9 h 39 min, +5 min compared with Seoul.
Solar forecast for Hongseong, 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 Hongseong
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Places near Hongseong
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A free, live card for Hongseong: 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.