| Values for Old Faithful Area | 1976-07-29 |
|---|---|
| Astronomical Twilight Begin | 04:02 |
| Nautical Twilight Begin | 04:51 |
| Civil Twilight Begin | 05:33 |
| Sunrise | 06:07 |
| Sunset | 20:52 |
| Civil Twilight End | 21:25 |
| Nautical Twilight End | 22:08 |
| Astronomical Twilight End | 22:57 |
| Moon Illumination | 5.94% |