Window Rock is a natural arch in Navajo County, Arizona at about 1,841 m (6,040 ft) above sea level. It sits roughly 14.1 km (8.8 mi) WNW of Dilkon.
Sunrise & sunset directions
At Window Rock the sunrise point swings a long way through the year: about 60° (ENE) at the June solstice and 119° (ESE) in late December. Sunset moves from 300° (WNW) in June to 242° (WSW) in December, and the midday sun climbs to 78° in summer but only 31° in winter.
| Date | Sunrise | Azimuth | Sunset | Azimuth | Noon sun | Daylight |
|---|---|---|---|---|---|---|
| March equinox (Mar 20) | 7:26 AM | 90° E | 7:34 PM | 271° W | 54° | 12h 08m |
| June solstice (Jun 21) | 6:08 AM | 60° ENE | 8:41 PM | 300° WNW | 78° | 14h 33m |
| September equinox (Sep 22) | 7:11 AM | 89° E | 7:20 PM | 271° W | 55° | 12h 10m |
| December solstice (Dec 21) | 7:28 AM | 119° ESE | 5:13 PM | 242° WSW | 31° | 9h 46m |
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
Arches glow when reflected light bounces off nearby rock — the underside of an arch often turns bright orange just after sunrise or before sunset.
| Month (15th) | Blue hour starts | Sunrise | Golden hour ends | Golden hour starts | Sunset | Blue hour ends | Daylight |
|---|---|---|---|---|---|---|---|
| January | 7:03 AM | 7:31 AM | 8:09 AM | 4:54 PM | 5:33 PM | 6:00 PM | 10h 02m |
| February | 6:43 AM | 7:09 AM | 7:45 AM | 5:29 PM | 6:04 PM | 6:30 PM | 10h 55m |
| March | 7:08 AM | 7:33 AM | 8:07 AM | 6:56 PM | 7:30 PM | 7:55 PM | 11h 56m |
| April | 6:24 AM | 6:50 AM | 7:24 AM | 7:21 PM | 7:55 PM | 8:21 PM | 13h 05m |
| May | 5:50 AM | 6:18 AM | 6:54 AM | 7:44 PM | 8:20 PM | 8:48 PM | 14h 02m |
| June | 5:37 AM | 6:07 AM | 6:45 AM | 8:02 PM | 8:39 PM | 9:09 PM | 14h 32m |
| July | 5:49 AM | 6:19 AM | 6:56 AM | 8:01 PM | 8:38 PM | 9:07 PM | 14h 19m |
| August | 6:15 AM | 6:42 AM | 7:17 AM | 7:38 PM | 8:12 PM | 8:39 PM | 13h 30m |
| September | 6:40 AM | 7:05 AM | 7:39 AM | 6:57 PM | 7:31 PM | 7:56 PM | 12h 25m |
| October | 7:03 AM | 7:29 AM | 8:03 AM | 6:13 PM | 6:48 PM | 7:13 PM | 11h 19m |
| November | 6:31 AM | 6:58 AM | 7:35 AM | 4:40 PM | 5:17 PM | 5:44 PM | 10h 18m |
| December | 6:56 AM | 7:25 AM | 8:04 AM | 4:32 PM | 5:11 PM | 5:39 PM | 9h 47m |
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 Window Rock, the Milky Way core is visible in a dark sky from February through October. June gives the longest window (about 5.8 hours on a moonless night), and the core peaks around 26° above the southern horizon. Our light-pollution model puts the sky at about Bortle 1 (excellent dark-sky site), which is excellent for astrophotography.
| Month | Core visible (15th) | Hours | Max altitude | Direction |
|---|---|---|---|---|
| January | Below 10° in darkness | — | -1° | — |
| February | 5:10 AM – 5:40 AM | 0.5 | 15° | SE → SE |
| March | 4:15 AM – 6:05 AM | 1.8 | 22° | SE → SSE |
| April | 2:15 AM – 5:15 AM | 3.0 | 25° | SE → S |
| May | 12:20 AM – 4:30 AM | 4.2 | 26° | SE → SSW |
| June | 10:28 PM – 4:18 AM | 5.8 | 26° | SE → SW |
| July | 10:23 PM – 2:53 AM | 4.5 | 26° | SSE → SW |
| August | 9:46 PM – 12:46 AM | 3.0 | 25° | S → SW |
| September | 8:57 PM – 10:47 PM | 1.8 | 22° | SSW → SW |
| October | 8:13 PM – 8:43 PM | 0.5 | 15° | SW → SW |
| November | Below 10° in darkness | — | 2° | — |
| 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: 1 Bortle 1 — Excellent dark-sky site. The Milky Way casts faint shadows; zodiacal light and airglow are obvious. Modeled zenith brightness ≈ 21.92 mag/arcsec².
Weather & best season
Long-term NASA satellite data for this area show June as the clearest month (about 25% average cloud cover) and December as the cloudiest (50%). 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 | 66 | 72 | 82 | 89 | 99 | 106 | 104 | 103 | 100 | 89 | 79 | 68 |
| Low °F | 5 | 3 | 17 | 21 | 28 | 40 | 53 | 52 | 36 | 17 | 17 | 9 |
| Precip. (in) | 0.7 | 0.7 | 0.5 | 0.4 | 0.4 | 0.1 | 1.3 | 1.4 | 0.8 | 0.6 | 0.6 | 0.8 |
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 natural arch
- At night, arches make classic Milky Way foregrounds; low-level lighting or blue hour exposures keep the rock detailed.
- Use a wide lens and get close to emphasize the span against the sky.
- Never climb on arches; many are fragile and climbing is prohibited on park lands.
- Midday sun creates hard shadows, but can light the underside through reflection in narrow canyons.
- Frame distant features through the opening of the arch for a natural window.
- Tell someone where you're going in remote areas and carry the ten essentials.
Season: Spring and autumn offer mild temperatures in desert arch country; summer heat is extreme at midday.
Suggested gear: Ultra-wide lens, Tripod, Headlamp, Plenty of water. Work out exposures with the depth of field, ND filter and NPF rule calculators.
FAQ
When is the best time to photograph Window Rock?
What time is golden hour at Window Rock?
Where does the sun rise and set at Window Rock?
Can you see the Milky Way from Window Rock?
Do you need a permit to photograph at Window Rock?
How far is Window Rock from Dilkon?
Sources
Location data: USGS GNIS / GeoNames. 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.