| Values for Old Faithful Area | 1975-10-03 |
|---|---|
| Astronomical Twilight Begin | 05:46 |
| Nautical Twilight Begin | 06:20 |
| Civil Twilight Begin | 06:54 |
| Sunrise | 07:23 |
| Sunset | 19:01 |
| Civil Twilight End | 19:30 |
| Nautical Twilight End | 20:04 |
| Astronomical Twilight End | 20:38 |
| Moon Illumination | 5.48% |