| Geyser | 2000-02-15 |
|---|---|
| Grand | 0659 E, 1902 E |
| Values for Old Faithful Area | 2000-02-15 |
|---|---|
| Astronomical Twilight Begin | 05:46 |
| Nautical Twilight Begin | 06:19 |
| Civil Twilight Begin | 06:53 |
| Sunrise | 07:23 |
| Sunset | 17:51 |
| Civil Twilight End | 18:21 |
| Nautical Twilight End | 18:55 |
| Astronomical Twilight End | 19:28 |
| Moon Illumination | 75.43% |