| Values for Old Faithful Area | 1998-10-28 |
|---|---|
| Astronomical Twilight Begin | 05:17 |
| Nautical Twilight Begin | 05:51 |
| Civil Twilight Begin | 06:25 |
| Sunrise | 06:55 |
| Sunset | 17:18 |
| Civil Twilight End | 17:48 |
| Nautical Twilight End | 18:22 |
| Astronomical Twilight End | 18:56 |
| Moon Illumination | 48% |