| Geyser | 2000-01-25 |
|---|---|
| Grand | 0805 E, 1832 E |
| Great Fountain | 0112 E, 1123 E |
| Values for Old Faithful Area | 2000-01-25 |
|---|---|
| Astronomical Twilight Begin | 06:07 |
| Nautical Twilight Begin | 06:42 |
| Civil Twilight Begin | 07:17 |
| Sunrise | 07:49 |
| Sunset | 17:22 |
| Civil Twilight End | 17:53 |
| Nautical Twilight End | 18:28 |
| Astronomical Twilight End | 19:03 |
| Moon Illumination | 79.22% |