| Geyser | 1931-07-24 |
|---|---|
| Ebony | 1425 |
| Values for Old Faithful Area | 1931-07-24 |
|---|---|
| Astronomical Twilight Begin | 02:50 |
| Nautical Twilight Begin | 03:42 |
| Civil Twilight Begin | 04:26 |
| Sunrise | 05:00 |
| Sunset | 19:58 |
| Civil Twilight End | 20:32 |
| Nautical Twilight End | 21:16 |
| Astronomical Twilight End | 22:08 |
| Moon Illumination | 72.39% |