| Values for Old Faithful Area | 1977-02-22 |
|---|---|
| Astronomical Twilight Begin | 05:35 |
| Nautical Twilight Begin | 06:08 |
| Civil Twilight Begin | 06:42 |
| Sunrise | 07:11 |
| Sunset | 18:01 |
| Civil Twilight End | 18:31 |
| Nautical Twilight End | 19:04 |
| Astronomical Twilight End | 19:38 |
| Moon Illumination | 16.81% |