| Values for Old Faithful Area | 1977-02-07 |
|---|---|
| Astronomical Twilight Begin | 05:55 |
| Nautical Twilight Begin | 06:29 |
| Civil Twilight Begin | 07:03 |
| Sunrise | 07:34 |
| Sunset | 17:41 |
| Civil Twilight End | 18:11 |
| Nautical Twilight End | 18:45 |
| Astronomical Twilight End | 19:19 |
| Moon Illumination | 88.65% |