| Values for Old Faithful Area | 1971-06-09 |
|---|---|
| Astronomical Twilight Begin | 03:13 |
| Nautical Twilight Begin | 04:14 |
| Civil Twilight Begin | 05:02 |
| Sunrise | 05:38 |
| Sunset | 21:06 |
| Civil Twilight End | 21:42 |
| Nautical Twilight End | 22:30 |
| Astronomical Twilight End | 23:31 |
| Moon Illumination | 99.94% |