| Values for Old Faithful Area | 1974-08-27 |
|---|---|
| Astronomical Twilight Begin | 04:53 |
| Nautical Twilight Begin | 05:32 |
| Civil Twilight Begin | 06:09 |
| Sunrise | 06:40 |
| Sunset | 20:09 |
| Civil Twilight End | 20:39 |
| Nautical Twilight End | 21:16 |
| Astronomical Twilight End | 21:55 |
| Moon Illumination | 74.41% |