| Geyser | 1931-02-19 |
|---|---|
| No reports yet |
| Values for Old Faithful Area | 1931-02-19 |
|---|---|
| Astronomical Twilight Begin | 05:40 |
| Nautical Twilight Begin | 06:14 |
| Civil Twilight Begin | 06:48 |
| Sunrise | 07:18 |
| Sunset | 17:56 |
| Civil Twilight End | 18:26 |
| Nautical Twilight End | 19:00 |
| Astronomical Twilight End | 19:33 |
| Moon Illumination | 2.68% |