| Values for Old Faithful Area | 1997-05-03 |
|---|---|
| Astronomical Twilight Begin | 04:12 |
| Nautical Twilight Begin | 04:57 |
| Civil Twilight Begin | 05:37 |
| Sunrise | 06:10 |
| Sunset | 20:30 |
| Civil Twilight End | 21:02 |
| Nautical Twilight End | 21:42 |
| Astronomical Twilight End | 22:27 |
| Moon Illumination | 16.78% |