| Geyser | 1968-06-11 |
|---|---|
| Blue | 1350 ie |
| Constant | 1425 |
| Dark Cavern | 1318, 1327, 1330 |
| Ebony | 1500 |
| Echinus | 1322, 1408, 1445, 1522 |
| Fan-Norris | 1545 |
| Valentine | 1200 |
| Values for Old Faithful Area | 1968-06-11 |
|---|---|
| Astronomical Twilight Begin | 03:11 |
| Nautical Twilight Begin | 04:13 |
| Civil Twilight Begin | 05:01 |
| Sunrise | 05:38 |
| Sunset | 21:07 |
| Civil Twilight End | 21:44 |
| Nautical Twilight End | 22:32 |
| Astronomical Twilight End | 23:34 |
| Moon Illumination | 99.74% |