| Values for Old Faithful Area | 2015-04-01 |
|---|---|
| Astronomical Twilight Begin | 05:23 |
| Nautical Twilight Begin | 05:59 |
| Civil Twilight Begin | 06:34 |
| Sunrise | 07:04 |
| Sunset | 19:50 |
| Civil Twilight End | 20:19 |
| Nautical Twilight End | 20:54 |
| Astronomical Twilight End | 21:30 |
| Moon Illumination | 90.66% |