| Values for Old Faithful Area | 1975-10-04 |
|---|---|
| Astronomical Twilight Begin | 05:47 |
| Nautical Twilight Begin | 06:21 |
| Civil Twilight Begin | 06:55 |
| Sunrise | 07:24 |
| Sunset | 18:59 |
| Civil Twilight End | 19:28 |
| Nautical Twilight End | 20:02 |
| Astronomical Twilight End | 20:36 |
| Moon Illumination | 1.26% |