| Geyser | 1931-06-27 |
|---|---|
| Ledge | 0000 |
| Pinto | 1455 |
| Values for Old Faithful Area | 1931-06-27 |
|---|---|
| Astronomical Twilight Begin | 02:11 |
| Nautical Twilight Begin | 03:14 |
| Civil Twilight Begin | 04:03 |
| Sunrise | 04:40 |
| Sunset | 20:12 |
| Civil Twilight End | 20:48 |
| Nautical Twilight End | 21:37 |
| Astronomical Twilight End | 22:40 |
| Moon Illumination | 91.29% |