| Values for Old Faithful Area | 1971-10-08 |
|---|---|
| Astronomical Twilight Begin | 05:52 |
| Nautical Twilight Begin | 06:26 |
| Civil Twilight Begin | 07:00 |
| Sunrise | 07:29 |
| Sunset | 18:52 |
| Civil Twilight End | 19:21 |
| Nautical Twilight End | 19:55 |
| Astronomical Twilight End | 20:29 |
| Moon Illumination | 80.6% |