| Geyser | 1966-06-23 |
|---|---|
| Cistern Spring | 0800-1700 |
| Ebony | 1123 |
| Echinus | 0810-1658, 0810 A, 0922, 1038, 1154, 1310, 1426, 1542, 1658 |
| Steamboat | 0800-1710 |
| Vixen | 1330 ie |
| Values for Old Faithful Area | 1966-06-23 |
|---|---|
| Astronomical Twilight Begin | 03:10 |
| Nautical Twilight Begin | 04:13 |
| Civil Twilight Begin | 05:02 |
| Sunrise | 05:38 |
| Sunset | 21:11 |
| Civil Twilight End | 21:48 |
| Nautical Twilight End | 22:37 |
| Astronomical Twilight End | 23:40 |
| Moon Illumination | 24.48% |