| Values for Old Faithful Area | 2001-02-18 |
|---|---|
| Astronomical Twilight Begin | 05:40 |
| Nautical Twilight Begin | 06:14 |
| Civil Twilight Begin | 06:48 |
| Sunrise | 07:17 |
| Sunset | 17:56 |
| Civil Twilight End | 18:26 |
| Nautical Twilight End | 19:00 |
| Astronomical Twilight End | 19:33 |
| Moon Illumination | 21.29% |