| Values for Old Faithful Area | 1971-09-03 |
|---|---|
| Astronomical Twilight Begin | 05:04 |
| Nautical Twilight Begin | 05:42 |
| Civil Twilight Begin | 06:18 |
| Sunrise | 06:47 |
| Sunset | 19:57 |
| Civil Twilight End | 20:27 |
| Nautical Twilight End | 21:03 |
| Astronomical Twilight End | 21:40 |
| Moon Illumination | 94.74% |