| Values for Old Faithful Area | 1933-07-20 |
|---|---|
| Astronomical Twilight Begin | 02:44 |
| Nautical Twilight Begin | 03:37 |
| Civil Twilight Begin | 04:22 |
| Sunrise | 04:57 |
| Sunset | 20:01 |
| Civil Twilight End | 20:36 |
| Nautical Twilight End | 21:21 |
| Astronomical Twilight End | 22:14 |
| Moon Illumination | 5.27% |