| Geyser | 1931-05-13 |
|---|---|
| No reports yet |
| Values for Old Faithful Area | 1931-05-13 |
|---|---|
| Astronomical Twilight Begin | 02:54 |
| Nautical Twilight Begin | 03:43 |
| Civil Twilight Begin | 04:25 |
| Sunrise | 04:58 |
| Sunset | 19:40 |
| Civil Twilight End | 20:13 |
| Nautical Twilight End | 20:56 |
| Astronomical Twilight End | 21:44 |
| Moon Illumination | 17.37% |