District of Columbia · United States · 38.90° N · 77.00° W
Solar position in H Street NE
Sun position, daylight and the best solar panel angle for H Street NE — computed for 38.90° N, 77.00° W, 18 m above sea level.
The sun right now
Sun in H Street NE today
Saturday, 24 October 2026 · local time UTC−4
| Event | Time | Direction / height |
|---|---|---|
| Astronomical dawn | 05:57 | sun 18° below horizon |
| Nautical dawn | 06:28 | 12° below |
| Civil dawn | 06:59 | 6° below |
| Sunrise | 07:26 | 105° ESE |
| Golden hour ends | 08:03 | sun 6° up |
| Solar noon | 12:51 | 39.2° high |
| Golden hour starts | 17:40 | sun 6° up |
| Sunset | 18:17 | 255° WSW |
| Civil dusk | 18:44 | 6° below |
| Nautical dusk | 19:15 | 12° below |
| Astronomical dusk | 19:46 | 18° below |
| Day length | 10 h 50 min | |
Sun path diagram for H Street NE
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 74.5° at solar noon in H Street NE; on the December solstice only 27.7°. Sunrise swings from 58° ENE in June to 120° ESE in December — a 61° 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 | 07:22 | 12:19 | 17:16 | 9 h 55 min | 31.3° |
| February | 06:51 | 12:21 | 17:52 | 11 h 01 min | 40.7° |
| March | 07:09 | 13:15 | 19:20 | 12 h 11 min | 51.5° |
| April | 06:22 | 13:06 | 19:50 | 13 h 28 min | 63.1° |
| May | 05:50 | 13:04 | 20:19 | 14 h 28 min | 71.4° |
| June | 05:42 | 13:09 | 20:36 | 14 h 54 min | 74.5° |
| July | 05:59 | 13:14 | 20:28 | 14 h 29 min | 71.5° |
| August | 06:27 | 13:10 | 19:54 | 13 h 27 min | 63.0° |
| September | 06:54 | 13:00 | 19:06 | 12 h 12 min | 51.6° |
| October | 07:23 | 12:52 | 18:21 | 10 h 57 min | 40.2° |
| November | 06:57 | 11:53 | 16:50 | 9 h 53 min | 31.1° |
| December | 07:23 | 12:06 | 16:49 | 9 h 26 min | 27.7° |
A year of daylight in H Street NE
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 H Street NE
Fixed array facing south (azimuth 180°). Energy per kWp from NASA POWER monthly climate, including clouds, temperature and snow reflection.
34°collects the most energy over a year: 1436 kWh per kWp.
63°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° | 1226 | 85% | 1.50 | 3.4× |
| 15° | 1369 | 95% | 2.11 | 2.4× |
| 30° | 1433 | 100% | 2.60 | 1.8× |
| 34° year-round best | 1436 | 100% | 2.70 | 1.7× |
| 39° = latitude | 1432 | 100% | 2.81 | 1.6× |
| 45° | 1414 | 98% | 2.92 | 1.5× |
| 60° | 1314 | 92% | 3.05 | 1.3× |
| 63° off-grid best | 1285 | 89% | 3.06 | 1.3× |
| 70° | 1206 | 84% | 3.03 | 1.3× |
| 90° | 912 | 63% | 2.75 | 1.9× |
A fixed array in H Street NE produces the most over a year at 34°. The design month for an off-grid system is December: at 63° it makes 3.06 kWh per kWp a day, 13% more than at 34°, and costs 11% of the yearly total. Why steep panels win winter.
Off-grid solar in H Street NE at 70°
Daily energy of 1 kWp by month. Bars: panels at 70°. Line: panels at 34° (year-round best).
| Month | Sun hours, flat | Sun hours at 70° | kWh/kWp/day at 70° | at 34° | Mean temp. |
|---|---|---|---|---|---|
| January snow | 2.10 | 3.75 | 3.39 | 3.02 | 0.1 °C |
| February | 2.94 | 4.02 | 3.62 | 3.63 | 1.3 °C |
| March | 3.92 | 4.16 | 3.67 | 4.14 | 5.8 °C |
| April | 5.01 | 3.97 | 3.42 | 4.50 | 12.1 °C |
| May | 5.60 | 3.54 | 2.96 | 4.44 | 17.7 °C |
| June | 6.25 | 3.50 | 2.87 | 4.62 | 22.8 °C |
| July | 6.14 | 3.62 | 2.94 | 4.59 | 25.7 °C |
| August | 5.41 | 3.89 | 3.17 | 4.41 | 24.9 °C |
| September | 4.40 | 4.18 | 3.48 | 4.16 | 21.1 °C |
| October | 3.27 | 4.20 | 3.59 | 3.72 | 14.2 °C |
| November | 2.41 | 4.04 | 3.55 | 3.29 | 7.7 °C |
| December | 1.84 | 3.39 | 3.03 | 2.70 | 2.6 °C |
| Year | 4.11 avg | 3.85 avg | 1206 kWh | 1436 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 410 Wp of panels at 70°, versus 440 Wp at 34°. The steep array is 6% smaller for the same winter. Size your own system.
Row spacing in H Street NE
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.
4.8 mrow pitch at 70°
4.1 mrow pitch at 34°
How H Street NE 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.
1655thof 3,121 places in the United States for sunshine, shared: 4.11 peak sun hours a day on flat ground.
−5%solar energy a year compared with the average place in the United States: 1,436 against 1,515 kWh per kWp.
−12 mindaylight on the longest day, compared with New York City: 14 h 54 min against 15 h 06 min.
34°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); H Street NE ranks joint 1655th. In its darkest month, June, 1 kWp of off-grid panels at 70° makes 2.87 kWh a day here, against 2.55 kWh on average in the United States. The shortest day lasts 9 h 26 min, +11 min compared with New York City.
Solar forecast for H Street NE, 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 H Street NE
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A free, live card for H Street NE: 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.