| Values for Old Faithful Area | 1975-02-27 |
|---|---|
| Astronomical Twilight Begin | 06:27 |
| Nautical Twilight Begin | 07:01 |
| Civil Twilight Begin | 07:35 |
| Sunrise | 08:04 |
| Sunset | 19:07 |
| Civil Twilight End | 19:37 |
| Nautical Twilight End | 20:10 |
| Astronomical Twilight End | 20:44 |
| Moon Illumination | 97.8% |