| Values for Old Faithful Area | 1964-05-17 |
|---|---|
| Astronomical Twilight Begin | 02:44 |
| Nautical Twilight Begin | 03:35 |
| Civil Twilight Begin | 04:19 |
| Sunrise | 04:53 |
| Sunset | 19:46 |
| Civil Twilight End | 20:20 |
| Nautical Twilight End | 21:03 |
| Astronomical Twilight End | 21:54 |
| Moon Illumination | 36.63% |