| Values for Old Faithful Area | 2001-04-11 |
|---|---|
| Astronomical Twilight Begin | 05:00 |
| Nautical Twilight Begin | 05:39 |
| Civil Twilight Begin | 06:15 |
| Sunrise | 06:45 |
| Sunset | 20:03 |
| Civil Twilight End | 20:33 |
| Nautical Twilight End | 21:09 |
| Astronomical Twilight End | 21:47 |
| Moon Illumination | 88.46% |