| Values for Old Faithful Area | 1973-07-22 |
|---|---|
| Astronomical Twilight Begin | 03:48 |
| Nautical Twilight Begin | 04:41 |
| Civil Twilight Begin | 05:25 |
| Sunrise | 05:59 |
| Sunset | 20:59 |
| Civil Twilight End | 21:34 |
| Nautical Twilight End | 22:18 |
| Astronomical Twilight End | 23:10 |
| Moon Illumination | 60.05% |