| Values for Old Faithful Area | 1976-05-04 |
|---|---|
| Astronomical Twilight Begin | 04:10 |
| Nautical Twilight Begin | 04:55 |
| Civil Twilight Begin | 05:36 |
| Sunrise | 06:08 |
| Sunset | 20:31 |
| Civil Twilight End | 21:03 |
| Nautical Twilight End | 21:44 |
| Astronomical Twilight End | 22:29 |
| Moon Illumination | 20.76% |