| Values for Old Faithful Area | 1977-05-14 |
|---|---|
| Astronomical Twilight Begin | 03:50 |
| Nautical Twilight Begin | 04:40 |
| Civil Twilight Begin | 05:22 |
| Sunrise | 05:56 |
| Sunset | 20:42 |
| Civil Twilight End | 21:16 |
| Nautical Twilight End | 21:58 |
| Astronomical Twilight End | 22:48 |
| Moon Illumination | 13.17% |