| Values for Old Faithful Area | 1975-10-14 |
|---|---|
| Astronomical Twilight Begin | 06:00 |
| Nautical Twilight Begin | 06:33 |
| Civil Twilight Begin | 07:07 |
| Sunrise | 07:36 |
| Sunset | 18:42 |
| Civil Twilight End | 19:11 |
| Nautical Twilight End | 19:44 |
| Astronomical Twilight End | 20:18 |
| Moon Illumination | 70.98% |