| Values for Old Faithful Area | 1973-04-22 |
|---|---|
| Astronomical Twilight Begin | 03:37 |
| Nautical Twilight Begin | 04:18 |
| Civil Twilight Begin | 04:56 |
| Sunrise | 05:27 |
| Sunset | 19:16 |
| Civil Twilight End | 19:47 |
| Nautical Twilight End | 20:25 |
| Astronomical Twilight End | 21:06 |
| Moon Illumination | 80.64% |