| Values for Old Faithful Area | 1975-02-23 |
|---|---|
| Astronomical Twilight Begin | 06:34 |
| Nautical Twilight Begin | 07:07 |
| Civil Twilight Begin | 07:41 |
| Sunrise | 08:11 |
| Sunset | 19:02 |
| Civil Twilight End | 19:31 |
| Nautical Twilight End | 20:05 |
| Astronomical Twilight End | 20:39 |
| Moon Illumination | 88.89% |