| Values for Old Faithful Area | 2002-02-01 |
|---|---|
| Astronomical Twilight Begin | 06:01 |
| Nautical Twilight Begin | 06:35 |
| Civil Twilight Begin | 07:10 |
| Sunrise | 07:41 |
| Sunset | 17:32 |
| Civil Twilight End | 18:03 |
| Nautical Twilight End | 18:38 |
| Astronomical Twilight End | 19:12 |
| Moon Illumination | 84.37% |