Third Principal Meridian
historic site
Surveying meridian
Wikidata Q7785086, matched on coordinates and name (66 m apart).
- Material
- metal
- 51.8 mi off the Great River RoadNational
- 30.9 mi off the Historic National Road - IllinoisNational
| Date | Sunrise | Golden hour | Sunset |
|---|---|---|---|
| March equinox | 07:01 | 18:34 | 19:09 |
| June solstice | 05:34 | 19:45 | 20:25 |
| September equinox | 06:45 | 18:20 | 18:55 |
| December solstice | 07:11 | 15:58 | 16:40 |
Local time (America/Chicago).
38.47426, -89.14380
Elevation 156 m (modelled from terrain)