| Values for Old Faithful Area | 2001-09-02 |
|---|---|
| Astronomical Twilight Begin | 05:04 |
| Nautical Twilight Begin | 05:41 |
| Civil Twilight Begin | 06:17 |
| Sunrise | 06:47 |
| Sunset | 19:58 |
| Civil Twilight End | 20:27 |
| Nautical Twilight End | 21:03 |
| Astronomical Twilight End | 21:41 |
| Moon Illumination | 99.62% |