| Values for Old Faithful Area | 1976-10-09 |
|---|---|
| Astronomical Twilight Begin | 05:54 |
| Nautical Twilight Begin | 06:28 |
| Civil Twilight Begin | 07:02 |
| Sunrise | 07:31 |
| Sunset | 18:49 |
| Civil Twilight End | 19:18 |
| Nautical Twilight End | 19:52 |
| Astronomical Twilight End | 20:25 |
| Moon Illumination | 99.02% |