1. Home
  2. Dark Sky Places
  3. Utah
  4. Rockport State Park
40.7658° N111.3908° WBortle 4Denver

Rockport State Park Photography Guide

Dark Sky Place in Summit County, Utah

  • Bortle 4 sky
  • Sunset azimuth 239°–303°
  • Clearest: September
  • Milky Way Mar–Sep

Rockport State Park — a dark sky place in Summit County, Utah — is a popular subject for landscape photographers. The nearest town is Silver Summit, about 8.6 km (5.3 mi) away (Rockport State Park lies ENE of town). It is certified as an International Dark Sky Park by DarkSky International.

Wikidata describes it as: “state park in Summit County, Utah, United States”.

Nearest town
Silver Summit
8.6 km (5.3 mi)
Sky darkness
Bortle 4
Rural / suburban transition
Clearest month
September
34% cloud
Milky Way peak
June
4.7 h window
Golden hour (Oct)
6:09 PM
sunset 6:47 PM

Light at Rockport State Park

Live
Sunrise
7:43 AM
Sunset
6:39 PM
Golden hour AM
7:26 AM – 8:20 AM
Golden hour PM
6:02 PM – 6:56 PM
Blue hour AM
7:15 AM – 7:26 AM
Blue hour PM
6:56 PM – 7:07 PM
Full darkness
8:10 PM – 6:13 AM
Moon
Waxing Gibbous · 71%
Moonrise / set
3:57 PM / 1:44 AM
Day length
10h 56m
Sunrise azimuth
103°
Sunset azimuth
257°
000306091215182124
NightTwilightBlue hourGolden hourDaylight

Times in America/Denver. Golden hour = sun −4° to +6°; blue hour = −6° to −4°.

Clouds at sunrise & sunset

NWS

Hourly sky cover from the National Weather Service. 20–60% cloud often gives the most colorful sunrises and sunsets.

Sunrise & sunset directions

At Rockport State Park 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 303° (WNW) in June to 239° (WSW) in December, and the midday sun climbs to 73° in summer but only 26° in winter.

NESW60°30°
June solsticeEquinoxesDecember solstice
DateSunriseAzimuthSunsetAzimuthNoon sunDaylight
March equinox (Mar 20)7:30 AM90° E7:38 PM271° W49°12h 08m
June solstice (Jun 21)5:55 AM58° ENE9:01 PM303° WNW73°15h 06m
September equinox (Sep 22)7:14 AM89° E7:24 PM271° W49°12h 11m
December solstice (Dec 21)7:47 AM121° ESE5:02 PM239° WSW26°9h 15m

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

Certified dark sky places offer protected night skies — plan around the new moon and the Milky Way core season.

Month (15th)Blue hour startsSunriseGolden hour endsGolden hour startsSunsetBlue hour endsDaylight
January7:18 AM7:48 AM8:30 AM4:41 PM5:23 PM5:53 PM9h 35m
February6:52 AM7:21 AM7:59 AM5:22 PM6:01 PM6:29 PM10h 40m
March7:11 AM7:38 AM8:14 AM6:56 PM7:33 PM8:00 PM11h 54m
April6:19 AM6:47 AM7:24 AM7:28 PM8:05 PM8:33 PM13h 18m
May5:38 AM6:09 AM6:48 AM7:57 PM8:36 PM9:08 PM14h 27m
June5:21 AM5:54 AM6:36 AM8:18 PM8:59 PM9:33 PM15h 05m
July5:35 AM6:08 AM6:48 AM8:16 PM8:57 PM9:29 PM14h 49m
August6:07 AM6:37 AM7:14 AM7:48 PM8:25 PM8:55 PM13h 49m
September6:40 AM7:07 AM7:43 AM7:00 PM7:36 PM8:04 PM12h 29m
October7:10 AM7:37 AM8:15 AM6:09 PM6:47 PM7:14 PM11h 09m
November6:44 AM7:13 AM7:54 AM4:28 PM5:09 PM5:38 PM9h 55m
December7:13 AM7:44 AM8:27 AM4:16 PM5:00 PM5:31 PM9h 16m

Local time (America/Denver), 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 Rockport State Park, the Milky Way core is visible in a dark sky from March through September. June gives the longest window (about 4.7 hours on a moonless night), and the core peaks around 20° above the southern horizon. Our light-pollution model puts the sky at about Bortle 4 (rural / suburban transition), good enough for detailed Milky Way images.

MonthCore visible (15th)HoursMax altitudeDirection
JanuaryBelow 10° in darkness—-2°—
February5:43 AM – 5:43 AM0.011°SE → SE
March4:54 AM – 6:04 AM1.217°SE → SSE
April2:54 AM – 5:04 AM2.220°SE → S
May12:50 AM – 4:10 AM3.320°SE → S
June11:06 PM – 3:46 AM4.720°SSE → SSW
July10:57 PM – 2:17 AM3.320°S → SW
August10:09 PM – 12:19 AM2.220°S → SW
September9:10 PM – 10:20 PM1.217°SSW → SW
October8:18 PM – 8:18 PM0.011°SW → SW
NovemberBelow 10° in darkness—-1°—
DecemberBelow 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: 4 Bortle 4 — Rural / suburban transition. Light domes are visible in several directions; the Milky Way is clear but lacks detail near the horizon. Modeled zenith brightness ≈ 20.89 mag/arcsec². Aurora needs roughly Kp 7.5+ 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 34% average cloud cover) and February as the cloudiest (64%). 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 (%)

JanFebMarAprMayJunJulAugSepOctNovDec
JanFebMarAprMayJunJulAugSepOctNovDec
High °F505667748490969288796549
Low °F-23-28-14-68223631191-17-21
Precip. (in)2.01.81.82.31.91.11.01.21.71.71.72.3

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 dark sky place

  • Set focus on a bright star with live-view magnification, then tape the focus ring.
  • Use the NPF rule below to choose the longest exposure before stars trail.
  • Many parks host star parties and night programs during summer.
  • Use the Milky Way table to find months and hours when the core is above the horizon.
  • Use red light only and keep it pointed down to protect others' night vision.
  • Check road and trail conditions with the managing agency before you go.

Season: Milky Way core season runs roughly March to October; winter offers long nights and bright winter constellations.

Suggested gear: Fast wide lens (f/1.4–f/2.8), Sturdy tripod, Red headlamp, Intervalometer. Work out exposures with the depth of field, ND filter and NPF rule calculators.

Nearby photo spots

Other locations within 40 km of Rockport State Park, closest first.

Campgrounds nearby (Recreation.gov)

FAQ

When is the best time to photograph Rockport State Park?
September has the clearest skies on average; june is best for the milky way core. For light, plan around the first and last hour of sun. Milky Way core season runs roughly March to October; winter offers long nights and bright winter constellations.
What time is golden hour at Rockport State Park?
In October the evening golden hour starts around 6:09 PM and ends after sunset at about 6:47 PM; the morning golden hour lasts until about 8:15 AM. Use the live widget above for exact times on any date.
Where does the sun rise and set at Rockport State Park?
Sunrise azimuth ranges from about 58° in June to 121° in December; sunset ranges from 303° to 239°. See the sun-path diagram for the full arc.
Can you see the Milky Way from Rockport State Park?
Yes — the core is visible from March to September on moonless nights. The estimated sky quality is Bortle 4 (rural / suburban transition).
Do you need a permit to photograph at Rockport State Park?
Personal photography from public land rarely needs a permit. Commercial shoots, models, large groups and drones may require permission from the land manager — check before you go.
How far is Rockport State Park from Silver Summit?
About 8.6 km (5.3 mi) in a straight line; driving distance is usually longer, especially in mountain terrain.

Sources

Location data: DarkSky International (via Wikidata). 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.