| Geyser | 1966-07-24 |
|---|---|
| Arsenic | 1137 |
| Ebony | 1540 |
| Echinus | 0810, 0923, 1035, 1250, 1416, 1526 |
| Fireball | 1137 |
| Ledge | 1613 |
| Steamboat | 0830 |
| Valentine | 1520 |
| Veteran | 1033 |
| Values for Old Faithful Area | 1966-07-24 |
|---|---|
| Astronomical Twilight Begin | 03:51 |
| Nautical Twilight Begin | 04:43 |
| Civil Twilight Begin | 05:27 |
| Sunrise | 06:01 |
| Sunset | 20:58 |
| Civil Twilight End | 21:32 |
| Nautical Twilight End | 22:16 |
| Astronomical Twilight End | 23:07 |
| Moon Illumination | 43.86% |