| Geyser | 1959-06-20 |
|---|---|
| Morning | 1005 |
| Values for Old Faithful Area | 1959-06-20 |
|---|---|
| Astronomical Twilight Begin | 02:09 |
| Nautical Twilight Begin | 03:12 |
| Civil Twilight Begin | 04:01 |
| Sunrise | 04:38 |
| Sunset | 20:11 |
| Civil Twilight End | 20:47 |
| Nautical Twilight End | 21:36 |
| Astronomical Twilight End | 22:39 |
| Moon Illumination | 99.56% |