| Values for Old Faithful Area | 1964-09-28 |
|---|---|
| Astronomical Twilight Begin | 04:40 |
| Nautical Twilight Begin | 05:15 |
| Civil Twilight Begin | 05:49 |
| Sunrise | 06:17 |
| Sunset | 18:09 |
| Civil Twilight End | 18:38 |
| Nautical Twilight End | 19:12 |
| Astronomical Twilight End | 19:46 |
| Moon Illumination | 53.89% |