| Values for Old Faithful Area | 1977-03-04 |
|---|---|
| Astronomical Twilight Begin | 05:18 |
| Nautical Twilight Begin | 05:52 |
| Civil Twilight Begin | 06:25 |
| Sunrise | 06:54 |
| Sunset | 18:15 |
| Civil Twilight End | 18:44 |
| Nautical Twilight End | 19:17 |
| Astronomical Twilight End | 19:51 |
| Moon Illumination | 97.39% |