Mile 230 North Dakota / South Dakota boundary
historic site
- Built
- 1891
- Material
- quartzite
| Date | Sunrise | Golden hour | Sunset |
|---|---|---|---|
| March equinox | 06:49 | 18:19 | 18:58 |
| June solstice | 04:56 | 19:54 | 20:40 |
| September equinox | 06:33 | 18:05 | 18:45 |
| December solstice | 07:25 | 15:13 | 16:04 |
Local time (America/Denver).
45.94418, -101.33432
Elevation 715 m (modelled from terrain)