| Values for Old Faithful Area | 1976-10-28 |
|---|---|
| Astronomical Twilight Begin | 06:18 |
| Nautical Twilight Begin | 06:51 |
| Civil Twilight Begin | 07:26 |
| Sunrise | 07:55 |
| Sunset | 18:18 |
| Civil Twilight End | 18:48 |
| Nautical Twilight End | 19:22 |
| Astronomical Twilight End | 19:56 |
| Moon Illumination | 32.24% |