| Values for Old Faithful Area | 1999-09-26 |
|---|---|
| Astronomical Twilight Begin | 05:37 |
| Nautical Twilight Begin | 06:12 |
| Civil Twilight Begin | 06:46 |
| Sunrise | 07:15 |
| Sunset | 19:14 |
| Civil Twilight End | 19:43 |
| Nautical Twilight End | 20:17 |
| Astronomical Twilight End | 20:51 |
| Moon Illumination | 99.15% |