| Values for Old Faithful Area | 1977-03-07 |
|---|---|
| Astronomical Twilight Begin | 05:13 |
| Nautical Twilight Begin | 05:46 |
| Civil Twilight Begin | 06:20 |
| Sunrise | 06:49 |
| Sunset | 18:19 |
| Civil Twilight End | 18:48 |
| Nautical Twilight End | 19:21 |
| Astronomical Twilight End | 19:55 |
| Moon Illumination | 96.78% |