| Values for Old Faithful Area | 2003-05-13 |
|---|---|
| Astronomical Twilight Begin | 03:53 |
| Nautical Twilight Begin | 04:42 |
| Civil Twilight Begin | 05:24 |
| Sunrise | 05:57 |
| Sunset | 20:41 |
| Civil Twilight End | 21:14 |
| Nautical Twilight End | 21:57 |
| Astronomical Twilight End | 22:45 |
| Moon Illumination | 87.67% |