| Geyser | 1959-08-07 |
|---|---|
| Morning | 1007 |
| Values for Old Faithful Area | 1959-08-07 |
|---|---|
| Astronomical Twilight Begin | 03:17 |
| Nautical Twilight Begin | 04:03 |
| Civil Twilight Begin | 04:43 |
| Sunrise | 05:16 |
| Sunset | 19:41 |
| Civil Twilight End | 20:14 |
| Nautical Twilight End | 20:54 |
| Astronomical Twilight End | 21:40 |
| Moon Illumination | 8.05% |