| Geyser | 2000-02-06 |
|---|---|
| Grand | 0256 E, 1617 E |
| Great Fountain | 0258 E, 1322 E |
| Values for Old Faithful Area | 2000-02-06 |
|---|---|
| Astronomical Twilight Begin | 05:57 |
| Nautical Twilight Begin | 06:31 |
| Civil Twilight Begin | 07:05 |
| Sunrise | 07:36 |
| Sunset | 17:38 |
| Civil Twilight End | 18:09 |
| Nautical Twilight End | 18:43 |
| Astronomical Twilight End | 19:17 |
| Moon Illumination | 0.55% |