| Values for Old Faithful Area | 1975-02-25 |
|---|---|
| Astronomical Twilight Begin | 06:31 |
| Nautical Twilight Begin | 07:04 |
| Civil Twilight Begin | 07:38 |
| Sunrise | 08:07 |
| Sunset | 19:05 |
| Civil Twilight End | 19:34 |
| Nautical Twilight End | 20:08 |
| Astronomical Twilight End | 20:41 |
| Moon Illumination | 99% |