| Values for Old Faithful Area | 1971-09-05 |
|---|---|
| Astronomical Twilight Begin | 05:07 |
| Nautical Twilight Begin | 05:44 |
| Civil Twilight Begin | 06:20 |
| Sunrise | 06:50 |
| Sunset | 19:53 |
| Civil Twilight End | 20:23 |
| Nautical Twilight End | 20:59 |
| Astronomical Twilight End | 21:36 |
| Moon Illumination | 99.99% |