| Values for Old Faithful Area | 1975-04-08 |
|---|---|
| Astronomical Twilight Begin | 05:08 |
| Nautical Twilight Begin | 05:46 |
| Civil Twilight Begin | 06:22 |
| Sunrise | 06:51 |
| Sunset | 19:58 |
| Civil Twilight End | 20:28 |
| Nautical Twilight End | 21:03 |
| Astronomical Twilight End | 21:41 |
| Moon Illumination | 10.73% |