Located in Caddo County, Oklahoma, Rock Mary is a rock formation. The nearest town is Hinton, about 6.5 km (4.0 mi) away (Rock Mary lies WSW of town). It is listed on the National Register of Historic Places.
Rock Mary, in Caddo County, Oklahoma, was a prominent landmark on the California Road. It was named in 1849 for Mary Conway, the then 17-year-old niece of James Sevier Conway, the Governor of Arkansas. Mary was the eldest daughter of Dr. John R. Conway, a prominent physician and surveyor, who emigrated to California with his wife and 10 children.From the Wikipedia article “Rock Mary”, licensed under CC BY-SA 4.0.
Sunrise & sunset directions
At Rock Mary 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) | 7:38 AM | 90° E | 7:46 PM | 271° W | 54° | 12h 08m |
| June solstice (Jun 21) | 6:20 AM | 60° ENE | 8:53 PM | 300° WNW | 78° | 14h 33m |
| September equinox (Sep 22) | 7:22 AM | 89° E | 7:32 PM | 271° W | 55° | 12h 10m |
| December solstice (Dec 21) | 7:40 AM | 119° ESE | 5:25 PM | 242° WSW | 31° | 9h 45m |
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
Rock towers and buttes glow red and orange in the first and last half-hour of sun; midday light flattens their shape.
| Month (15th) | Blue hour starts | Sunrise | Golden hour ends | Golden hour starts | Sunset | Blue hour ends | Daylight |
|---|---|---|---|---|---|---|---|
| January | 7:15 AM | 7:43 AM | 8:21 AM | 5:06 PM | 5:44 PM | 6:12 PM | 10h 01m |
| February | 6:55 AM | 7:21 AM | 7:56 AM | 5:41 PM | 6:16 PM | 6:42 PM | 10h 55m |
| March | 7:20 AM | 7:45 AM | 8:19 AM | 7:08 PM | 7:42 PM | 8:07 PM | 11h 56m |
| April | 6:36 AM | 7:02 AM | 7:36 AM | 7:33 PM | 8:07 PM | 8:33 PM | 13h 05m |
| May | 6:02 AM | 6:30 AM | 7:06 AM | 7:56 PM | 8:32 PM | 9:00 PM | 14h 02m |
| June | 5:49 AM | 6:19 AM | 6:57 AM | 8:14 PM | 8:51 PM | 9:21 PM | 14h 32m |
| July | 6:01 AM | 6:30 AM | 7:07 AM | 8:13 PM | 8:50 PM | 9:19 PM | 14h 20m |
| August | 6:27 AM | 6:54 AM | 7:29 AM | 7:50 PM | 8:24 PM | 8:51 PM | 13h 31m |
| September | 6:52 AM | 7:17 AM | 7:51 AM | 7:09 PM | 7:42 PM | 8:08 PM | 12h 25m |
| October | 7:15 AM | 7:41 AM | 8:15 AM | 6:25 PM | 7:00 PM | 7:25 PM | 11h 19m |
| November | 6:43 AM | 7:10 AM | 7:47 AM | 4:51 PM | 5:28 PM | 5:56 PM | 10h 19m |
| December | 7:08 AM | 7:36 AM | 8:16 AM | 4:44 PM | 5:23 PM | 5:51 PM | 9h 47m |
Local time (America/Chicago), 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 Rock Mary, 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 3 (rural sky), good enough for detailed Milky Way images.
| Month | Core visible (15th) | Hours | Max altitude | Direction |
|---|---|---|---|---|
| January | Below 10° in darkness | — | -1° | — |
| February | 5:22 AM – 5:52 AM | 0.5 | 15° | SE → SE |
| March | 4:27 AM – 6:17 AM | 1.8 | 22° | SE → SSE |
| April | 2:27 AM – 5:27 AM | 3.0 | 25° | SE → S |
| May | 12:32 AM – 4:42 AM | 4.2 | 26° | SE → SSW |
| June | 10:40 PM – 4:30 AM | 5.8 | 26° | SE → SW |
| July | 10:35 PM – 3:05 AM | 4.5 | 26° | SSE → SW |
| August | 9:58 PM – 12:58 AM | 3.0 | 25° | S → SW |
| September | 9:09 PM – 10:59 PM | 1.8 | 22° | SSW → SW |
| October | 8:25 PM – 8:55 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: 3 Bortle 3 — Rural sky. Some light domes sit on the horizon, but the Milky Way still looks complex overhead. Modeled zenith brightness ≈ 21.44 mag/arcsec².
Weather & best season
Long-term NASA satellite data for this area show July as the clearest month (about 39% average cloud cover) and February as the cloudiest (54%). 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 (%)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| High °F | 73 | 86 | 90 | 98 | 102 | 113 | 113 | 115 | 104 | 95 | 86 | 76 |
| Low °F | 5 | 4 | 7 | 23 | 35 | 52 | 60 | 56 | 44 | 21 | 17 | 6 |
| Precip. (in) | 1.0 | 1.3 | 2.0 | 3.0 | 4.3 | 3.9 | 2.6 | 3.2 | 2.8 | 2.8 | 1.3 | 1.1 |
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 rock formation
- Stay on trails; desert soils and lichens take decades to recover from footprints.
- Find a spot where the formation sits against open sky to emphasize its silhouette.
- At night, a formation under the Milky Way or star trails makes a strong anchor.
- Use the sunrise and sunset azimuths below to know which face will be lit.
- Check road and trail conditions with the managing agency before you go.
Season: Spring and autumn are best in desert regions; winter snow on red rock is rare but spectacular.
Suggested gear: Wide and telephoto lenses, Tripod, Headlamp. Work out exposures with the depth of field, ND filter and NPF rule calculators.
Nearby photo spots
Other locations within 25 km of Rock Mary, closest first.
FAQ
When is the best time to photograph Rock Mary?
What time is golden hour at Rock Mary?
Where does the sun rise and set at Rock Mary?
Can you see the Milky Way from Rock Mary?
Do you need a permit to photograph at Rock Mary?
How far is Rock Mary from Hinton?
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.