| Geyser | 2000-02-22 |
|---|---|
| Grand | 0526 E, 1829 E |
| Great Fountain | 0922 E, 1835 E |
| Values for Old Faithful Area | 2000-02-22 |
|---|---|
| Astronomical Twilight Begin | 05:35 |
| Nautical Twilight Begin | 06:09 |
| Civil Twilight Begin | 06:43 |
| Sunrise | 07:12 |
| Sunset | 18:00 |
| Civil Twilight End | 18:30 |
| Nautical Twilight End | 19:04 |
| Astronomical Twilight End | 19:37 |
| Moon Illumination | 91.57% |