| Values for Old Faithful Area | 1976-04-08 |
|---|---|
| Astronomical Twilight Begin | 04:07 |
| Nautical Twilight Begin | 04:45 |
| Civil Twilight Begin | 05:20 |
| Sunrise | 05:50 |
| Sunset | 18:59 |
| Civil Twilight End | 19:29 |
| Nautical Twilight End | 20:05 |
| Astronomical Twilight End | 20:42 |
| Moon Illumination | 55.4% |