| Values for Old Faithful Area | 1975-10-06 |
|---|---|
| Astronomical Twilight Begin | 05:50 |
| Nautical Twilight Begin | 06:24 |
| Civil Twilight Begin | 06:57 |
| Sunrise | 07:26 |
| Sunset | 18:56 |
| Civil Twilight End | 19:25 |
| Nautical Twilight End | 19:58 |
| Astronomical Twilight End | 20:32 |
| Moon Illumination | 1.84% |