| Geyser | 1931-09-25 |
|---|---|
| No reports yet |
| Values for Old Faithful Area | 1931-09-25 |
|---|---|
| Astronomical Twilight Begin | 04:35 |
| Nautical Twilight Begin | 05:10 |
| Civil Twilight Begin | 05:44 |
| Sunrise | 06:13 |
| Sunset | 18:17 |
| Civil Twilight End | 18:46 |
| Nautical Twilight End | 19:20 |
| Astronomical Twilight End | 19:54 |
| Moon Illumination | 97.88% |