| Geyser | 2000-01-10 |
|---|---|
| Grand | 0226 E, 1102 E, 1932 E |
| Great Fountain | 0301 E, 1243 E, 2203 E |
| Values for Old Faithful Area | 2000-01-10 |
|---|---|
| Astronomical Twilight Begin | 06:14 |
| Nautical Twilight Begin | 06:49 |
| Civil Twilight Begin | 07:25 |
| Sunrise | 07:58 |
| Sunset | 17:03 |
| Civil Twilight End | 17:35 |
| Nautical Twilight End | 18:11 |
| Astronomical Twilight End | 18:47 |
| Moon Illumination | 11.28% |