| Values for Old Faithful Area | 2001-10-02 |
|---|---|
| Astronomical Twilight Begin | 05:46 |
| Nautical Twilight Begin | 06:20 |
| Civil Twilight Begin | 06:53 |
| Sunrise | 07:22 |
| Sunset | 19:02 |
| Civil Twilight End | 19:31 |
| Nautical Twilight End | 20:04 |
| Astronomical Twilight End | 20:38 |
| Moon Illumination | 99.89% |