| Geyser | 1991-01-28 |
|---|---|
| No reports yet |
| Values for Old Faithful Area | 1991-01-28 |
|---|---|
| Astronomical Twilight Begin | 06:05 |
| Nautical Twilight Begin | 06:39 |
| Civil Twilight Begin | 07:14 |
| Sunrise | 07:46 |
| Sunset | 17:26 |
| Civil Twilight End | 17:57 |
| Nautical Twilight End | 18:32 |
| Astronomical Twilight End | 19:06 |
| Moon Illumination | 94.55% |