| Values for Old Faithful Area | 1933-08-23 |
|---|---|
| Astronomical Twilight Begin | 03:46 |
| Nautical Twilight Begin | 04:27 |
| Civil Twilight Begin | 05:04 |
| Sunrise | 05:35 |
| Sunset | 19:16 |
| Civil Twilight End | 19:47 |
| Nautical Twilight End | 20:24 |
| Astronomical Twilight End | 21:04 |
| Moon Illumination | 4.55% |