| Values for Old Faithful Area | 2008-04-18 |
|---|---|
| Astronomical Twilight Begin | 04:44 |
| Nautical Twilight Begin | 05:24 |
| Civil Twilight Begin | 06:02 |
| Sunrise | 06:32 |
| Sunset | 20:12 |
| Civil Twilight End | 20:42 |
| Nautical Twilight End | 21:20 |
| Astronomical Twilight End | 22:00 |
| Moon Illumination | 95.52% |