| Values for Old Faithful Area | 1976-10-22 |
|---|---|
| Astronomical Twilight Begin | 06:10 |
| Nautical Twilight Begin | 06:44 |
| Civil Twilight Begin | 07:18 |
| Sunrise | 07:48 |
| Sunset | 18:27 |
| Civil Twilight End | 18:56 |
| Nautical Twilight End | 19:30 |
| Astronomical Twilight End | 20:04 |
| Moon Illumination | 1.44% |