| Geyser | 1931-10-15 |
|---|---|
| No reports yet |
| Values for Old Faithful Area | 1931-10-15 |
|---|---|
| Astronomical Twilight Begin | 05:01 |
| Nautical Twilight Begin | 05:34 |
| Civil Twilight Begin | 06:08 |
| Sunrise | 06:37 |
| Sunset | 17:40 |
| Civil Twilight End | 18:10 |
| Nautical Twilight End | 18:43 |
| Astronomical Twilight End | 19:17 |
| Moon Illumination | 19.05% |