Flanders · Belgium · 51.08° N · 4.73° E
Solar position in Heist-op-den-Berg
Sun position, daylight and the best solar panel angle for Heist-op-den-Berg — computed for 51.08° N, 4.73° E, 36 m above sea level.
The sun right now
Sun in Heist-op-den-Berg today
Saturday, 24 October 2026 · local time UTC+2
| Event | Time | Direction / height |
|---|---|---|
| Astronomical dawn | 06:28 | sun 18° below horizon |
| Nautical dawn | 07:06 | 12° below |
| Civil dawn | 07:45 | 6° below |
| Sunrise | 08:19 | 108° ESE |
| Golden hour ends | 09:06 | sun 6° up |
| Solar noon | 13:24 | 27.1° high |
| Golden hour starts | 17:43 | sun 6° up |
| Sunset | 18:30 | 252° WSW |
| Civil dusk | 19:04 | 6° below |
| Nautical dusk | 19:42 | 12° below |
| Astronomical dusk | 20:20 | 18° below |
| Day length | 10 h 11 min | |
Sun path diagram for Heist-op-den-Berg
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 62.4° at solar noon in Heist-op-den-Berg; on the December solstice only 15.5°. Sunrise swings from 49° NE in June to 128° SE in December — a 79° 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 | 08:32 | 12:52 | 17:12 | 8 h 40 min | 19.1° |
| February | 07:42 | 12:54 | 18:07 | 10 h 25 min | 28.5° |
| March | 06:41 | 12:48 | 18:55 | 12 h 14 min | 39.3° |
| April | 06:33 | 13:39 | 20:46 | 14 h 13 min | 50.9° |
| May | 05:43 | 13:37 | 21:33 | 15 h 50 min | 59.2° |
| June | 05:26 | 13:42 | 21:59 | 16 h 34 min | 62.4° |
| July | 05:50 | 13:47 | 21:43 | 15 h 52 min | 59.3° |
| August | 06:37 | 13:44 | 20:50 | 14 h 13 min | 50.9° |
| September | 07:25 | 13:33 | 19:41 | 12 h 16 min | 39.5° |
| October | 08:14 | 13:25 | 18:36 | 10 h 22 min | 28.2° |
| November | 08:07 | 12:26 | 16:46 | 8 h 39 min | 19.0° |
| December | 08:42 | 12:39 | 16:36 | 7 h 54 min | 15.5° |
A year of daylight in Heist-op-den-Berg
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 Heist-op-den-Berg
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: 1102 kWh per kWp.
72°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° | 901 | 82% | 0.46 | 9.8× |
| 15° | 1025 | 93% | 0.73 | 6.4× |
| 30° | 1091 | 99% | 0.96 | 4.8× |
| 39° year-round best | 1102 | 100% | 1.07 | 4.1× |
| 45° | 1096 | 100% | 1.13 | 3.8× |
| 51° = latitude | 1081 | 98% | 1.18 | 3.5× |
| 60° | 1041 | 94% | 1.23 | 3.2× |
| 70° | 972 | 88% | 1.25 | 2.9× |
| 72° off-grid best | 955 | 87% | 1.26 | 2.8× |
| 90° | 769 | 70% | 1.20 | 2.3× |
A fixed array in Heist-op-den-Berg produces the most over a year at 39°. The design month for an off-grid system is December: at 72° it makes 1.26 kWh per kWp a day, 17% more than at 39°, and costs 13% of the yearly total. Why steep panels win winter.
Off-grid solar in Heist-op-den-Berg 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 | 0.79 | 1.67 | 1.47 | 1.29 | 2.1 °C |
| February | 1.48 | 2.43 | 2.15 | 2.04 | 2.7 °C |
| March | 2.72 | 3.47 | 3.06 | 3.18 | 5.5 °C |
| April | 4.28 | 4.16 | 3.62 | 4.22 | 9.4 °C |
| May | 5.09 | 3.98 | 3.39 | 4.38 | 13.2 °C |
| June | 5.46 | 3.88 | 3.26 | 4.40 | 16.5 °C |
| July | 5.24 | 3.87 | 3.23 | 4.28 | 18.5 °C |
| August | 4.41 | 3.86 | 3.23 | 3.95 | 18.1 °C |
| September | 3.33 | 3.80 | 3.24 | 3.52 | 14.9 °C |
| October | 1.93 | 2.87 | 2.48 | 2.43 | 10.8 °C |
| November | 0.95 | 1.80 | 1.56 | 1.41 | 6.4 °C |
| December | 0.62 | 1.43 | 1.25 | 1.07 | 3.0 °C |
| Year | 3.03 avg | 3.10 avg | 972 kWh | 1102 kWh |
Sizing example. To run a 1 kWh-per-day load through December on LiFePO4 batteries (charge controller, battery and inverter losses included) you need about 940 Wp of panels at 70°, versus 1,100 Wp at 39°. The steep array is 15% smaller for the same winter. Size your own system.
Row spacing in Heist-op-den-Berg
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.
9.3 mrow pitch at 70°
7.3 mrow pitch at 39°
How Heist-op-den-Berg compares in Belgium
Against the other 222 places in Belgium with climate data, for a fixed array at its best angle.
156thof 223 places in Belgium for sunshine, shared: 3.03 peak sun hours a day on flat ground.
−1%solar energy a year compared with the average place in Belgium: 1,102 against 1,112 kWh per kWp.
+2 mindaylight on the longest day, compared with Brussels: 16 h 34 min against 16 h 31 min.
39°best year-round tilt here; across Belgium it runs from 38° in Brugge to 39° in Brussels.
Of the 223 places in Belgium, Knokke-Heist and one other place get the most sun (3.13 peak sun hours a day) and Eupen the least (3.01); Heist-op-den-Berg ranks joint 156th. In its darkest month, December, 1 kWp of off-grid panels at 70° makes 1.25 kWh a day here, against 1.30 kWh on average in Belgium. The shortest day lasts 7 h 54 min, −2 min compared with Brussels.
Solar forecast for Heist-op-den-Berg, 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 Heist-op-den-Berg: 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.