Located in Hoonah-Angoon Census Area, Alaska, Clark Glacier is a glacier at about 974 m (3,196 ft) above sea level. It lies in or next to Glacier Bay National Park & Preserve, so park hours, fees and rules apply. It sits roughly 166 km (103 mi) WNW of Juneau.
Clark Glacier is an 8-mile (13 km) long glacier located on Mount Abbe in Glacier Bay National Park and Preserve in the U.S. state of Alaska. It leads northwest to its 1961 terminus at the head of Johns Hopkins Inlet, 78 mi (126 km) northwest of Hoonah, Alaska. It was named by W. O. Field and W. S. Cooper in 1936 for Johns Hopkins University professor of geology William Bullock Clark (1860–1917).From the Wikipedia article “Clark Glacier (Alaska)”, licensed under CC BY-SA 4.0.
Sunrise & sunset directions
At Clark Glacier the sunrise point swings a long way through the year: about 38° (NE) at the June solstice and 138° (SE) in late December. Sunset moves from 323° (NW) in June to 222° (SW) in December, and the midday sun climbs to 55° in summer but only 8° in winter.
| Date | Sunrise | Azimuth | Sunset | Azimuth | Noon sun | Daylight |
|---|---|---|---|---|---|---|
| March equinox (Mar 20) | 7:11 AM | 89° E | 7:23 PM | 272° W | 31° | 12h 12m |
| June solstice (Jun 21) | 3:58 AM | 38° NE | 10:24 PM | 323° NW | 55° | 18h 26m |
| September equinox (Sep 22) | 6:54 AM | 88° E | 7:10 PM | 272° W | 31° | 12h 16m |
| December solstice (Dec 21) | 9:00 AM | 138° SE | 3:14 PM | 222° SW | 8° | 6h 14m |
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
Ice shows its blue best under overcast skies or in shade; bright sun turns glaciers white and flat.
| Month (15th) | Blue hour starts | Sunrise | Golden hour ends | Golden hour starts | Sunset | Blue hour ends | Daylight |
|---|---|---|---|---|---|---|---|
| January | 7:58 AM | 8:48 AM | 10:13 AM | 2:24 PM | 3:49 PM | 4:39 PM | 7h 01m |
| February | 7:01 AM | 7:43 AM | 8:44 AM | 4:03 PM | 5:04 PM | 5:46 PM | 9h 21m |
| March | 6:45 AM | 7:25 AM | 8:19 AM | 6:18 PM | 7:11 PM | 7:51 PM | 11h 46m |
| April | 5:11 AM | 5:56 AM | 6:50 AM | 7:28 PM | 8:23 PM | 9:07 PM | 14h 27m |
| May | 3:41 AM | 4:39 AM | 5:43 AM | 8:28 PM | 9:32 PM | 10:31 PM | 16h 53m |
| June | 2:35 AM | 3:58 AM | 5:12 AM | 9:08 PM | 10:22 PM | 11:45 PM | 18h 24m |
| July | 3:14 AM | 4:23 AM | 5:32 AM | 8:58 PM | 10:07 PM | 11:16 PM | 17h 43m |
| August | 4:41 AM | 5:29 AM | 6:27 AM | 8:01 PM | 8:58 PM | 9:47 PM | 15h 29m |
| September | 5:58 AM | 6:39 AM | 7:31 AM | 6:38 PM | 7:31 PM | 8:11 PM | 12h 52m |
| October | 7:05 AM | 7:46 AM | 8:43 AM | 5:07 PM | 6:04 PM | 6:44 PM | 10h 18m |
| November | 7:14 AM | 8:00 AM | 9:14 AM | 2:34 PM | 3:47 PM | 4:34 PM | 7h 47m |
| December | 8:02 AM | 8:56 AM | 10:38 AM | 1:31 PM | 3:13 PM | 4:07 PM | 6h 17m |
Local time (America/Juneau), 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
The Milky Way's bright core (in Sagittarius) barely clears the southern horizon at this latitude, so focus on winter Milky Way, aurora or star trails instead.
| Month | Core visible (15th) | Hours | Max altitude | Direction |
|---|---|---|---|---|
| January | Below 10° in darkness | — | -11° | — |
| February | Below 10° in darkness | — | -5° | — |
| March | Below 10° in darkness | — | -2° | — |
| April | Below 10° in darkness | — | -3° | — |
| May | Below 10° in darkness | — | -1° | — |
| June | No darkness | — | — | — |
| July | No darkness | — | — | — |
| August | Below 10° in darkness | — | 0° | — |
| September | Below 10° in darkness | — | -4° | — |
| October | Below 10° in darkness | — | -5° | — |
| November | Below 10° in darkness | — | -10° | — |
| December | Below 10° in darkness | — | -21° | — |
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: 1 Bortle 1 — Excellent dark-sky site. The Milky Way casts faint shadows; zodiacal light and airglow are obvious. Modeled zenith brightness ≈ 21.95 mag/arcsec². Aurora needs roughly Kp 0.5+ to show low on the northern horizon here.
Weather & best season
Long-term NASA satellite data for this area show April as the clearest month (about 74% average cloud cover) and December as the cloudiest (81%). August is the warmest month and March 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 | 43 | 41 | 44 | 47 | 54 | 68 | 69 | 68 | 60 | 51 | 46 | 42 |
| Low °F | -3 | 0 | -2 | 15 | 28 | 35 | 40 | 43 | 37 | 21 | 5 | -1 |
| Precip. (in) | 17.8 | 14.5 | 11.6 | 10.8 | 9.2 | 7.1 | 8.7 | 13.2 | 18.8 | 20.2 | 19.7 | 20.0 |
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 glacier
- Include a person or boat for scale — glaciers are much larger than they look.
- Boat tours to tidewater glaciers offer calving shots; use fast shutter speeds and a telephoto.
- Never walk on a glacier without training and gear; crevasses hide under snow bridges.
- Expose carefully: ice and snow fool meters into underexposure, so add +1 to +2 stops.
- Bring a spare battery — cold weather and long exposures drain them fast.
Season: Summer offers access; late summer exposes the most bare ice before new snow.
Suggested gear: Telephoto lens, Polarizer, Waterproof shell, Spare batteries (cold drains them). Work out exposures with the depth of field, ND filter and NPF rule calculators.
Permits, drones & access
National Park Service rules. Under federal law (54 U.S.C. 100905), still photography in National Park Service areas needs a permit only when it (1) takes place where members of the public are not allowed, (2) uses models, sets or props that are not part of the location's natural or cultural resources or administrative facilities, or (3) would cause the park to incur additional administrative costs to monitor the activity. Ordinary visitor and most landscape photography needs no permit. Commercial filming rules are separate and have changed in recent years — confirm current requirements with the park before a paid shoot.
Drones: Launching, landing or operating unmanned aircraft (drones) is prohibited in National Park Service units under a 2014 Superintendent's closure (36 CFR 1.5), except where a park has issued specific written approval. Flying from outside the boundary over park land can also violate park rules and disturb wildlife.
Nearby photo spots
Other locations within 25 km of Clark Glacier, closest first.
Mountain Peak
Glacier
Glacier
Mountain Peak
Mountain Peak
Mountain Peak
Mountain Peak
Mountain Peak
GlacierFAQ
When is the best time to photograph Clark Glacier?
What time is golden hour at Clark Glacier?
Where does the sun rise and set at Clark Glacier?
Can you see the Milky Way from Clark Glacier?
Do you need a permit to photograph at Clark Glacier?
How far is Clark Glacier from Juneau?
Sources
Location data: Wikidata, USGS GNIS / GeoNames, 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.