Florida · United States · 28.47° N · 81.42° W
Solar position in Oak Ridge
Sun position, daylight and the best solar panel angle for Oak Ridge — computed for 28.47° N, 81.42° W, 27 m above sea level.
The sun right now
Sun in Oak Ridge today
Saturday, 24 October 2026 · local time UTC−4
| Event | Time | Direction / height |
|---|---|---|
| Astronomical dawn | 06:13 | sun 18° below horizon |
| Nautical dawn | 06:40 | 12° below |
| Civil dawn | 07:08 | 6° below |
| Sunrise | 07:32 | 103° ESE |
| Golden hour ends | 08:04 | sun 6° up |
| Solar noon | 13:09 | 49.6° high |
| Golden hour starts | 18:15 | sun 6° up |
| Sunset | 18:47 | 257° WSW |
| Civil dusk | 19:11 | 6° below |
| Nautical dusk | 19:38 | 12° below |
| Astronomical dusk | 20:06 | 18° below |
| Day length | 11 h 15 min | |
Sun path diagram for Oak Ridge
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 85.0° at solar noon in Oak Ridge; on the December solstice only 38.1°. Sunrise swings from 63° ENE in June to 116° ESE in December — a 54° 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 | 07:18 | 12:37 | 17:56 | 10 h 38 min | 41.8° |
| February | 06:58 | 12:39 | 18:20 | 11 h 22 min | 51.2° |
| March | 07:28 | 13:32 | 19:37 | 12 h 09 min | 62.0° |
| April | 06:54 | 13:24 | 19:54 | 13 h 01 min | 73.6° |
| May | 06:32 | 13:22 | 20:12 | 13 h 41 min | 81.8° |
| June | 06:28 | 13:27 | 20:26 | 13 h 57 min | 85.0° |
| July | 06:41 | 13:32 | 20:22 | 13 h 41 min | 81.9° |
| August | 06:58 | 13:28 | 19:58 | 13 h 00 min | 73.5° |
| September | 07:13 | 13:18 | 19:23 | 12 h 10 min | 62.0° |
| October | 07:30 | 13:10 | 18:50 | 11 h 20 min | 50.7° |
| November | 06:52 | 12:11 | 17:30 | 10 h 37 min | 41.5° |
| December | 07:13 | 12:23 | 17:33 | 10 h 20 min | 38.1° |
A year of daylight in Oak Ridge
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 Oak Ridge
Fixed array facing south (azimuth 180°). Energy per kWp from NASA POWER monthly climate, including clouds, temperature and snow reflection.
27°collects the most energy over a year: 1566 kWh per kWp.
36°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° | 1423 | 91% | 2.49 | 2.1× |
| 15° | 1538 | 98% | 3.21 | 1.6× |
| 27° year-round best | 1566 | 100% | 3.64 | 1.4× |
| 28° = latitude | 1566 | 100% | 3.67 | 1.4× |
| 30° | 1564 | 100% | 3.73 | 1.3× |
| 36° off-grid best | 1549 | 99% | 3.87 | 1.2× |
| 45° | 1500 | 96% | 4.01 | 1.3× |
| 60° | 1351 | 86% | 4.05 | 1.6× |
| 70° | 1211 | 77% | 3.93 | 1.9× |
| 90° | 862 | 55% | 3.38 | 3.0× |
A fixed array in Oak Ridge produces the most over a year at 27°. The design month for an off-grid system is December: at 36° it makes 3.87 kWh per kWp a day, 6% more than at 27°, and costs 1% of the yearly total. Why steep panels win winter.
Off-grid solar in Oak Ridge at 70°
Daily energy of 1 kWp by month. Bars: panels at 70°. Line: panels at 27° (year-round best).
| Month | Sun hours, flat | Sun hours at 70° | kWh/kWp/day at 70° | at 27° | Mean temp. |
|---|---|---|---|---|---|
| January | 3.44 | 4.90 | 4.18 | 3.97 | 14.9 °C |
| February | 4.08 | 4.63 | 3.93 | 4.20 | 17.0 °C |
| March | 5.22 | 4.62 | 3.87 | 4.82 | 19.5 °C |
| April | 6.13 | 3.95 | 3.26 | 5.00 | 22.7 °C |
| May | 6.47 | 3.20 | 2.59 | 4.81 | 25.7 °C |
| June | 5.80 | 2.71 | 2.17 | 4.17 | 27.1 °C |
| July | 5.74 | 2.83 | 2.26 | 4.18 | 27.3 °C |
| August | 5.44 | 3.25 | 2.62 | 4.21 | 27.3 °C |
| September | 4.94 | 3.84 | 3.13 | 4.20 | 26.1 °C |
| October | 4.43 | 4.60 | 3.80 | 4.28 | 23.2 °C |
| November | 3.63 | 4.88 | 4.10 | 4.01 | 19.4 °C |
| December | 3.12 | 4.64 | 3.93 | 3.64 | 17.0 °C |
| Year | 4.87 avg | 4.00 avg | 1211 kWh | 1566 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 540 Wp of panels at 70°, versus 320 Wp at 27°. Here the lower tilt is the better winter choice — the sun stays high enough. Size your own system.
Row spacing in Oak Ridge
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.
3.4 mrow pitch at 70°
3.1 mrow pitch at 27°
How Oak Ridge compares in the United States
Against the other 3,120 places in the United States with climate data, for a fixed array at its best angle.
749thof 3,121 places in the United States for sunshine, shared: 4.88 peak sun hours a day on flat ground.
+3%solar energy a year compared with the average place in the United States: 1,566 against 1,515 kWh per kWp.
−1 h 08 mindaylight on the longest day, compared with New York City: 13 h 57 min against 15 h 06 min.
27°best year-round tilt here; across the United States it runs from 18° in Honolulu to 53° in Fairbanks.
Of the 3,121 places in the United States, Fortuna Foothills and 2 other places get the most sun (5.96 peak sun hours a day) and Juneau the least (2.38); Oak Ridge ranks joint 749th. In its darkest month, June, 1 kWp of off-grid panels at 70° makes 2.17 kWh a day here, against 2.55 kWh on average in the United States. The shortest day lasts 10 h 20 min, +1 h 05 min compared with New York City.
Solar forecast for Oak Ridge, 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 Oak Ridge
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A free, live card for Oak Ridge: 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.