Logan Glacier is a glacier in Copper River Census Area, Alaska at about 2,820 m (9,252 ft) above sea level.
Logan Glacier is a glacier in the U.S. state of Alaska and territory of Yukon, Canada. It heads down the northern side of the Mount Logan massif in the Yukon, flowing northwest across the Canada-United States boundary to form the headwaters of the Chitina River. It was named for its origin on the slopes of, and proximity to, Mount Logan.From the Wikipedia article “Logan Glacier (Alaska)”, licensed under CC BY-SA 4.0.
Sunrise & sunset directions
At Logan Glacier the sunrise point swings a long way through the year: about 33° (NNE) at the June solstice and 142° (SE) in late December. Sunset moves from 327° (NNW) in June to 218° (SW) in December, and the midday sun climbs to 53° in summer but only 6° in winter.
| Date | Sunrise | Azimuth | Sunset | Azimuth | Noon sun | Daylight |
|---|---|---|---|---|---|---|
| March equinox (Mar 20) | 7:27 AM | 89° E | 7:39 PM | 272° W | 29° | 12h 13m |
| June solstice (Jun 21) | 3:52 AM | 33° NNE | 11:03 PM | 327° NNW | 53° | 19h 11m |
| September equinox (Sep 22) | 7:10 AM | 88° E | 7:27 PM | 272° W | 29° | 12h 17m |
| December solstice (Dec 21) | 9:35 AM | 142° SE | 3:12 PM | 218° SW | 6° | 5h 36m |
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 | 8:24 AM | 9:19 AM | 11:02 AM | 2:08 PM | 3:50 PM | 4:45 PM | 6h 31m |
| February | 7:21 AM | 8:06 AM | 9:13 AM | 4:07 PM | 5:13 PM | 5:58 PM | 9h 07m |
| March | 7:00 AM | 7:42 AM | 8:39 AM | 6:30 PM | 7:27 PM | 8:09 PM | 11h 44m |
| April | 5:18 AM | 6:06 AM | 7:04 AM | 7:47 PM | 8:45 PM | 9:33 PM | 14h 39m |
| May | 3:34 AM | 4:41 AM | 5:51 AM | 8:53 PM | 10:02 PM | 11:10 PM | 17h 21m |
| June | — | 3:52 AM | 5:16 AM | 9:36 PM | 11:00 PM | — | 19h 07m |
| July | 2:55 AM | 4:22 AM | 5:38 AM | 9:24 PM | 10:41 PM | 12:07 AM | 18h 19m |
| August | 4:43 AM | 5:36 AM | 6:38 AM | 8:22 PM | 9:24 PM | 10:17 PM | 15h 47m |
| September | 6:10 AM | 6:53 AM | 7:49 AM | 6:53 PM | 7:49 PM | 8:32 PM | 12h 56m |
| October | 7:23 AM | 8:07 AM | 9:08 AM | 5:15 PM | 6:15 PM | 6:59 PM | 10h 09m |
| November | 7:38 AM | 8:29 AM | 9:53 AM | 2:28 PM | 3:52 PM | 4:42 PM | 7h 23m |
| December | 8:30 AM | 9:31 AM | — | — | 3:11 PM | 4:11 PM | 5h 40m |
Local time (America/Anchorage), 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 | — | -12° | — |
| February | Below 10° in darkness | — | -6° | — |
| March | Below 10° in darkness | — | -5° | — |
| April | Below 10° in darkness | — | -8° | — |
| May | No darkness | — | — | — |
| June | No darkness | — | — | — |
| July | No darkness | — | — | — |
| August | Below 10° in darkness | — | -3° | — |
| September | Below 10° in darkness | — | -7° | — |
| October | Below 10° in darkness | — | -7° | — |
| November | Below 10° in darkness | — | -12° | — |
| 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 0.0+ to show low on the northern horizon here.
Weather & best season
Long-term NASA satellite data for this area show March as the clearest month (about 64% average cloud cover) and August as the cloudiest (87%). July 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 | 28 | 25 | 36 | 41 | 41 | 48 | 48 | 48 | 41 | 38 | 31 | 26 |
| Low °F | -28 | -28 | -33 | -18 | -3 | 12 | 19 | 15 | 5 | -17 | -21 | -27 |
| Precip. (in) | 9.5 | 8.4 | 6.6 | 5.0 | 4.5 | 3.8 | 4.9 | 8.6 | 12.4 | 11.8 | 10.8 | 11.1 |
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.
- A polarizer deepens the blue of glacial ice and the turquoise of meltwater lakes.
- 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.
FAQ
When is the best time to photograph Logan Glacier?
What time is golden hour at Logan Glacier?
Where does the sun rise and set at Logan Glacier?
Can you see the Milky Way from Logan Glacier?
Do you need a permit to photograph at Logan Glacier?
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.