| Values for Old Faithful Area | 1976-10-10 |
|---|---|
| Astronomical Twilight Begin | 05:56 |
| Nautical Twilight Begin | 06:30 |
| Civil Twilight Begin | 07:03 |
| Sunrise | 07:32 |
| Sunset | 18:47 |
| Civil Twilight End | 19:16 |
| Nautical Twilight End | 19:50 |
| Astronomical Twilight End | 20:24 |
| Moon Illumination | 96.28% |