Santa Susana Pass State Historic Park is a state park in Los Angeles County, California. It sits roughly 1.8 km (1.1 mi) W of Chatsworth.
Santa Susana Pass State Historic Park is a California State Park of 670.68 acres (2.7141 km2) located in the city of Los Angeles, in Los Angeles County on the boundary between Ventura and Los Angeles counties, between the communities of Chatsworth and Simi Valley. Geologically, the park is located where the Simi Hills meet the Santa Susana Mountains. Here in the western part of the Transverse Ranges, the land is dominated by high, narrow ridges and deep canyons covered with an abundant variety of plant life. The park offers panoramic views of the rugged natural landscape as a striking contrast to the developed communities nearby. The park is also rich in archaeological, historical, and cultural significance.From the Wikipedia article “Santa Susana Pass State Historic Park”, licensed under CC BY-SA 4.0.
Sunrise & sunset directions
At Santa Susana Pass State Historic Park the sunrise point swings a long way through the year: about 61° (ENE) at the June solstice and 118° (ESE) in late December. Sunset moves from 300° (WNW) in June to 242° (WSW) in December, and the midday sun climbs to 79° in summer but only 32° in winter.
| Date | Sunrise | Azimuth | Sunset | Azimuth | Noon sun | Daylight |
|---|---|---|---|---|---|---|
| March equinox (Mar 20) | 6:59 AM | 90° E | 7:07 PM | 271° W | 56° | 12h 08m |
| June solstice (Jun 21) | 5:44 AM | 61° ENE | 8:10 PM | 300° WNW | 79° | 14h 27m |
| September equinox (Sep 22) | 6:43 AM | 89° E | 6:53 PM | 271° W | 56° | 12h 09m |
| December solstice (Dec 21) | 6:58 AM | 118° ESE | 4:49 PM | 242° WSW | 32° | 9h 52m |
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
State parks often protect a signature feature — a gorge, lake or overlook — that is best in early morning before visitors and harsh light arrive.
| Month (15th) | Blue hour starts | Sunrise | Golden hour ends | Golden hour starts | Sunset | Blue hour ends | Daylight |
|---|---|---|---|---|---|---|---|
| January | 6:34 AM | 7:01 AM | 7:38 AM | 4:31 PM | 5:08 PM | 5:35 PM | 10h 07m |
| February | 6:15 AM | 6:40 AM | 7:15 AM | 5:04 PM | 5:39 PM | 6:04 PM | 10h 58m |
| March | 6:41 AM | 7:06 AM | 7:39 AM | 6:29 PM | 7:03 PM | 7:28 PM | 11h 57m |
| April | 5:58 AM | 6:24 AM | 6:57 AM | 6:53 PM | 7:26 PM | 7:52 PM | 13h 02m |
| May | 5:26 AM | 5:53 AM | 6:29 AM | 7:15 PM | 7:50 PM | 8:18 PM | 13h 57m |
| June | 5:14 AM | 5:43 AM | 6:20 AM | 7:32 PM | 8:09 PM | 8:38 PM | 14h 26m |
| July | 5:26 AM | 5:54 AM | 6:31 AM | 7:31 PM | 8:08 PM | 8:36 PM | 14h 14m |
| August | 5:50 AM | 6:17 AM | 6:51 AM | 7:09 PM | 7:43 PM | 8:10 PM | 13h 27m |
| September | 6:13 AM | 6:38 AM | 7:12 AM | 6:30 PM | 7:03 PM | 7:28 PM | 12h 24m |
| October | 6:35 AM | 7:00 AM | 7:34 AM | 5:48 PM | 6:21 PM | 6:47 PM | 11h 21m |
| November | 6:02 AM | 6:28 AM | 7:05 AM | 4:15 PM | 4:52 PM | 5:18 PM | 10h 23m |
| December | 6:26 AM | 6:54 AM | 7:33 AM | 4:08 PM | 4:47 PM | 5:15 PM | 9h 53m |
Local time (America/Los Angeles), 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 Santa Susana Pass State Historic Park, the Milky Way core is visible in a dark sky from February through October. June gives the longest window (about 6.0 hours on a moonless night), and the core peaks around 27° above the southern horizon. Our light-pollution model puts the sky at about Bortle 8 (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 | — | 0° | — |
| February | 4:32 AM – 5:12 AM | 0.7 | 16° | SE → SE |
| March | 3:46 AM – 5:36 AM | 1.8 | 23° | SE → SSE |
| April | 1:44 AM – 4:44 AM | 3.0 | 27° | SE → S |
| May | 11:47 PM – 4:07 AM | 4.3 | 27° | SE → SSW |
| June | 9:53 PM – 3:53 AM | 6.0 | 27° | SE → SW |
| July | 9:49 PM – 2:29 AM | 4.7 | 27° | SSE → SW |
| August | 9:14 PM – 12:24 AM | 3.2 | 27° | S → SW |
| September | 8:27 PM – 10:27 PM | 2.0 | 24° | SSW → SW |
| October | 7:44 PM – 8:24 PM | 0.7 | 16° | SW → SW |
| November | Below 10° in darkness | — | 2° | — |
| December | Below 10° in darkness | — | -18° | — |
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: 8 Bortle 8 — City sky. Only bright constellations are visible; the sky glows orange or white. Modeled zenith brightness ≈ 18.29 mag/arcsec².
Weather & best season
Long-term NASA satellite data for this area show August as the clearest month (about 14% average cloud cover) and January as the cloudiest (42%). July is the warmest month and December 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 | 80 | 84 | 87 | 93 | 99 | 109 | 110 | 107 | 112 | 101 | 89 | 80 |
| Low °F | 24 | 25 | 26 | 30 | 36 | 42 | 50 | 51 | 43 | 35 | 27 | 24 |
| Precip. (in) | 2.9 | 3.1 | 1.9 | 0.8 | 0.4 | 0.0 | 0.1 | 0.0 | 0.1 | 0.7 | 1.0 | 2.4 |
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 state park
- Day-use fees or passes are common; buy them online before arriving.
- Check park hours: many state parks close at dusk, which affects sunset and night shooting.
- Ask rangers about photography permits for commercial work, models or drones.
- Weekday mornings are the least crowded at popular viewpoints.
- Shoot RAW to keep the most latitude for high-contrast sunrise and sunset scenes.
Season: Spring wildflowers and autumn color are peak seasons in most parks.
Suggested gear: Versatile zoom lens, Tripod, Park pass. Work out exposures with the depth of field, ND filter and NPF rule calculators.
Permits, drones & access
Drones: Drone rules in state parks vary by state and even by park — many require a permit or ban recreational drone flights. Check the park's rules and the FAA B4UFLY app before flying.
Nearby photo spots
Other locations within 40 km of Santa Susana Pass State Historic Park, closest first.
Mountain Pass
Canyon
Botanical Garden
Canyon
Ghost Town
Waterfall
Mountain Pass
Mountain Pass
Botanical GardenFAQ
When is the best time to photograph Santa Susana Pass State Historic Park?
What time is golden hour at Santa Susana Pass State Historic Park?
Where does the sun rise and set at Santa Susana Pass State Historic Park?
Can you see the Milky Way from Santa Susana Pass State Historic Park?
Do you need a permit to photograph at Santa Susana Pass State Historic Park?
How far is Santa Susana Pass State Historic Park from Chatsworth?
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.