| Geyser | 1990-01-25 |
|---|---|
| Fan and Mortar | 0600 A |
| Giant | 1700 |
| Values for Old Faithful Area | 1990-01-25 |
|---|---|
| Astronomical Twilight Begin | 06:07 |
| Nautical Twilight Begin | 06:42 |
| Civil Twilight Begin | 07:17 |
| Sunrise | 07:48 |
| Sunset | 17:22 |
| Civil Twilight End | 17:54 |
| Nautical Twilight End | 18:29 |
| Astronomical Twilight End | 19:03 |
| Moon Illumination | 2.6% |