Turtle Rock Light is a lighthouse in Philadelphia County, Pennsylvania. It is part of Boathouse Row. It sits roughly 800 m WSW of Fairmount. It dates from 1887.
The Lighthouse on Turtle Rock is a lighthouse built in 1887 to aid traffic on the Schuylkill River near Philadelphia, Pennsylvania. The lighthouse was constructed by Frank Thurwanger at a cost of $2,663 on an area of land just west of Boathouse Row. The lighthouse has a hexagonal lantern room with an octagonal walkway. Gas was first used to power the light, but in 1990, when the lighthouse was repainted and received a new wooden balustrade and newel posts, the beacon was electrified.From the Wikipedia article “Turtle Rock Light”, licensed under CC BY-SA 4.0.
Sunrise & sunset directions
At Turtle Rock Light the sunrise point swings a long way through the year: about 58° (ENE) at the June solstice and 121° (ESE) in late December. Sunset moves from 302° (WNW) in June to 240° (WSW) in December, and the midday sun climbs to 73° in summer but only 27° in winter.
| Date | Sunrise | Azimuth | Sunset | Azimuth | Noon sun | Daylight |
|---|---|---|---|---|---|---|
| March equinox (Mar 20) | 7:05 AM | 90° E | 7:13 PM | 271° W | 50° | 12h 08m |
| June solstice (Jun 21) | 5:33 AM | 58° ENE | 8:34 PM | 302° WNW | 73° | 15h 01m |
| September equinox (Sep 22) | 6:49 AM | 89° E | 7:00 PM | 271° W | 50° | 12h 11m |
| December solstice (Dec 21) | 7:20 AM | 121° ESE | 4:39 PM | 240° WSW | 27° | 9h 20m |
Azimuth is measured clockwise from true north (90° = east, 270° = west). Computed for 2026; values change by less than a degree from year to year.
Golden hour & blue hour by month
Lighthouses work at both ends of the day: blue hour when the beacon is lit, and golden hour when white towers take on warm tones.
| Month (15th) | Blue hour starts | Sunrise | Golden hour ends | Golden hour starts | Sunset | Blue hour ends | Daylight |
|---|---|---|---|---|---|---|---|
| January | 6:52 AM | 7:21 AM | 8:03 AM | 4:19 PM | 5:00 PM | 5:30 PM | 9h 39m |
| February | 6:27 AM | 6:55 AM | 7:32 AM | 4:59 PM | 5:37 PM | 6:05 PM | 10h 42m |
| March | 6:46 AM | 7:13 AM | 7:49 AM | 6:32 PM | 7:08 PM | 7:35 PM | 11h 55m |
| April | 5:56 AM | 6:24 AM | 7:00 AM | 7:03 PM | 7:39 PM | 8:07 PM | 13h 15m |
| May | 5:16 AM | 5:47 AM | 6:25 AM | 7:31 PM | 8:09 PM | 8:40 PM | 14h 23m |
| June | 5:00 AM | 5:32 AM | 6:13 AM | 7:51 PM | 8:32 PM | 9:05 PM | 15h 00m |
| July | 5:13 AM | 5:45 AM | 6:25 AM | 7:50 PM | 8:29 PM | 9:01 PM | 14h 44m |
| August | 5:44 AM | 6:13 AM | 6:50 AM | 7:22 PM | 7:59 PM | 8:28 PM | 13h 46m |
| September | 6:15 AM | 6:42 AM | 7:18 AM | 6:36 PM | 7:11 PM | 7:39 PM | 12h 29m |
| October | 6:44 AM | 7:12 AM | 7:48 AM | 5:46 PM | 6:23 PM | 6:50 PM | 11h 11m |
| November | 6:18 AM | 6:47 AM | 7:27 AM | 4:06 PM | 4:46 PM | 5:15 PM | 9h 59m |
| December | 6:46 AM | 7:16 AM | 7:59 AM | 3:54 PM | 4:37 PM | 5:08 PM | 9h 21m |
Local time (America/New York), including daylight saving time. Golden hour runs from about −4° to +6° solar altitude, so the morning golden hour begins during blue hour, before sunrise.
Milky Way & night sky
From Turtle Rock Light, the Milky Way core is visible in a dark sky from March through September. June gives the longest window (about 4.8 hours on a moonless night), and the core peaks around 21° above the southern horizon. Our light-pollution model puts the sky at about Bortle 9 (inner-city sky), so expect visible sky glow; drive away from towns for better results.
| Month | Core visible (15th) | Hours | Max altitude | Direction |
|---|---|---|---|---|
| January | Below 10° in darkness | — | -3° | — |
| February | 5:08 AM – 5:18 AM | 0.2 | 11° | SE → SE |
| March | 4:18 AM – 5:38 AM | 1.3 | 18° | SE → SSE |
| April | 2:16 AM – 4:36 AM | 2.3 | 21° | SE → S |
| May | 12:20 AM – 3:50 AM | 3.5 | 21° | SE → S |
| June | 10:35 PM – 3:25 AM | 4.8 | 21° | SE → SSW |
| July | 10:27 PM – 1:57 AM | 3.5 | 21° | S → SW |
| August | 9:41 PM – 12:01 AM | 2.3 | 21° | S → SW |
| September | 8:44 PM – 9:54 PM | 1.2 | 18° | SSW → SW |
| October | 7:53 PM – 8:03 PM | 0.2 | 11° | SW → SW |
| November | Below 10° in darkness | — | 0° | — |
| December | Below 10° in darkness | — | -19° | — |
Window when the galactic core is at least 10° high during astronomical darkness on the 15th of each month. Pick nights within a few days of the new moon. Plan exact nights with the Milky Way planner.
Estimated sky darkness: 9 Bortle 9 — Inner-city sky. Only the Moon, planets and a few bright stars are visible. Modeled zenith brightness ≈ 17.66 mag/arcsec². Aurora needs roughly Kp 6.5+ to show low on the northern horizon here.
Weather & best season
Long-term NASA satellite data for this area show September as the clearest month (about 50% average cloud cover) and December as the cloudiest (63%). July is the warmest month and January the coldest, which matters for gear, snow access and how long batteries last at night.
Average cloud cover (%)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| High °F | 67 | 72 | 77 | 91 | 90 | 97 | 102 | 100 | 96 | 95 | 76 | 70 |
| Low °F | 0 | -1 | -3 | 25 | 35 | 46 | 55 | 54 | 43 | 30 | 21 | 10 |
| Precip. (in) | 2.9 | 3.1 | 3.6 | 3.7 | 3.7 | 4.8 | 4.5 | 4.4 | 4.2 | 4.2 | 3.5 | 3.9 |
Monthly climatology for the surrounding 1° grid cell from NASA POWER (MERRA-2). Mountain sites can be colder and cloudier than the cell average.
Photography tips for this lighthouse
- Stormy weather and crashing surf add drama; keep a safe distance from waves on rocks and piers.
- A telephoto from across a bay compresses the tower against cliffs or the moon.
- Many lighthouses are on private or Coast Guard property — check public access and opening hours.
- Moonrise or the Milky Way over the tower makes a classic night composition; plan with the azimuth tables.
- Scout in daylight if you plan to shoot at night or before sunrise.
Season: Summer brings open towers and tours; autumn and winter offer storms, fewer crowds and lower sun angles.
Suggested gear: Tripod, Telephoto lens, ND filter for smooth water, Rain cover. Work out exposures with the depth of field, ND filter and NPF rule calculators.
Tides
The nearest NOAA tide prediction station is Market Street Bridge, 1.9 km (1.2 mi) away. Low tide often reveals tide pools, wet-sand reflections and sea stacks.
Nearby photo spots
Other locations within 25 km of Turtle Rock Light, closest first.
Covered Bridge
Botanical Garden
Waterfall
Botanical Garden
Botanical Garden
Botanical Garden
Botanical GardenWaterfall
Botanical GardenFAQ
When is the best time to photograph Turtle Rock Light?
What time is golden hour at Turtle Rock Light?
Where does the sun rise and set at Turtle Rock Light?
Can you see the Milky Way from Turtle Rock Light?
Do you need a permit to photograph at Turtle Rock Light?
How far is Turtle Rock Light from Fairmount?
Sources
Location data: Wikidata, Wikipedia. Sun, moon and Milky Way times are computed by LWPhoto Atlas for 2026. Climate: NASA POWER. Sky darkness is a population-based estimate (Walker's law), not a measurement. See data sources & licenses.