| Values for Old Faithful Area | 1997-05-28 |
|---|---|
| Astronomical Twilight Begin | 03:26 |
| Nautical Twilight Begin | 04:22 |
| Civil Twilight Begin | 05:08 |
| Sunrise | 05:43 |
| Sunset | 20:57 |
| Civil Twilight End | 21:32 |
| Nautical Twilight End | 22:18 |
| Astronomical Twilight End | 23:14 |
| Moon Illumination | 62.34% |