| Values for Old Faithful Area | 1976-08-03 |
|---|---|
| Astronomical Twilight Begin | 04:11 |
| Nautical Twilight Begin | 04:58 |
| Civil Twilight Begin | 05:39 |
| Sunrise | 06:12 |
| Sunset | 20:45 |
| Civil Twilight End | 21:18 |
| Nautical Twilight End | 22:00 |
| Astronomical Twilight End | 22:47 |
| Moon Illumination | 53.78% |