| Values for Old Faithful Area | 1981-06-06 |
|---|---|
| Astronomical Twilight Begin | 03:15 |
| Nautical Twilight Begin | 04:15 |
| Civil Twilight Begin | 05:03 |
| Sunrise | 05:39 |
| Sunset | 21:04 |
| Civil Twilight End | 21:40 |
| Nautical Twilight End | 22:28 |
| Astronomical Twilight End | 23:28 |
| Moon Illumination | 18.59% |