| Geyser | 1931-07-07 |
|---|---|
| Valentine | 1020 |
| Values for Old Faithful Area | 1931-07-07 |
|---|---|
| Astronomical Twilight Begin | 02:22 |
| Nautical Twilight Begin | 03:22 |
| Civil Twilight Begin | 04:09 |
| Sunrise | 04:45 |
| Sunset | 20:10 |
| Civil Twilight End | 20:46 |
| Nautical Twilight End | 21:33 |
| Astronomical Twilight End | 22:33 |
| Moon Illumination | 56.68% |