| Values for Old Faithful Area | 1976-09-25 |
|---|---|
| Astronomical Twilight Begin | 05:37 |
| Nautical Twilight Begin | 06:11 |
| Civil Twilight Begin | 06:45 |
| Sunrise | 07:14 |
| Sunset | 19:15 |
| Civil Twilight End | 19:44 |
| Nautical Twilight End | 20:17 |
| Astronomical Twilight End | 20:52 |
| Moon Illumination | 2.96% |