| Geyser | 1991-01-29 |
|---|---|
| No reports yet |
| Values for Old Faithful Area | 1991-01-29 |
|---|---|
| Astronomical Twilight Begin | 06:04 |
| Nautical Twilight Begin | 06:38 |
| Civil Twilight Begin | 07:14 |
| Sunrise | 07:45 |
| Sunset | 17:27 |
| Civil Twilight End | 17:58 |
| Nautical Twilight End | 18:33 |
| Astronomical Twilight End | 19:08 |
| Moon Illumination | 98.69% |