| Values for Old Faithful Area | 1976-05-09 |
|---|---|
| Astronomical Twilight Begin | 04:00 |
| Nautical Twilight Begin | 04:47 |
| Civil Twilight Begin | 05:29 |
| Sunrise | 06:02 |
| Sunset | 20:37 |
| Civil Twilight End | 21:10 |
| Nautical Twilight End | 21:51 |
| Astronomical Twilight End | 22:39 |
| Moon Illumination | 72.1% |