| Geyser | 1979-07-12 |
|---|---|
| Dark Cavern | 0950 |
| Echinus | 0904, 0904, 1013, 1120, 1452 |
| Little Whirligig | 0935, 1245, 1659 |
| Vixen | 1800 |
| Values for Old Faithful Area | 1979-07-12 |
|---|---|
| Astronomical Twilight Begin | 03:30 |
| Nautical Twilight Begin | 04:27 |
| Civil Twilight Begin | 05:14 |
| Sunrise | 05:49 |
| Sunset | 21:07 |
| Civil Twilight End | 21:43 |
| Nautical Twilight End | 22:29 |
| Astronomical Twilight End | 23:27 |
| Moon Illumination | 91.63% |