| Values for Old Faithful Area | 1993-12-28 |
|---|---|
| Astronomical Twilight Begin | 06:13 |
| Nautical Twilight Begin | 06:49 |
| Civil Twilight Begin | 07:25 |
| Sunrise | 07:59 |
| Sunset | 16:51 |
| Civil Twilight End | 17:24 |
| Nautical Twilight End | 18:01 |
| Astronomical Twilight End | 18:36 |
| Moon Illumination | 99.5% |