| Values for Old Faithful Area | 1975-10-30 |
|---|---|
| Astronomical Twilight Begin | 05:19 |
| Nautical Twilight Begin | 05:53 |
| Civil Twilight Begin | 06:27 |
| Sunrise | 06:57 |
| Sunset | 17:16 |
| Civil Twilight End | 17:46 |
| Nautical Twilight End | 18:20 |
| Astronomical Twilight End | 18:54 |
| Moon Illumination | 24.23% |