| Geyser | 1949-07-18 |
|---|---|
| Ledge | 1625 |
| Values for Old Faithful Area | 1949-07-18 |
|---|---|
| Astronomical Twilight Begin | 02:40 |
| Nautical Twilight Begin | 03:35 |
| Civil Twilight Begin | 04:20 |
| Sunrise | 04:55 |
| Sunset | 20:03 |
| Civil Twilight End | 20:38 |
| Nautical Twilight End | 21:23 |
| Astronomical Twilight End | 22:18 |
| Moon Illumination | 49.63% |