| Geyser | 1989-01-27 |
|---|---|
| Fan and Mortar | 0000 A |
| Values for Old Faithful Area | 1989-01-27 |
|---|---|
| Astronomical Twilight Begin | 06:05 |
| Nautical Twilight Begin | 06:40 |
| Civil Twilight Begin | 07:15 |
| Sunrise | 07:46 |
| Sunset | 17:25 |
| Civil Twilight End | 17:56 |
| Nautical Twilight End | 18:32 |
| Astronomical Twilight End | 19:06 |
| Moon Illumination | 75.22% |