| Values for Old Faithful Area | 1998-10-23 |
|---|---|
| Astronomical Twilight Begin | 06:11 |
| Nautical Twilight Begin | 06:45 |
| Civil Twilight Begin | 07:19 |
| Sunrise | 07:48 |
| Sunset | 18:26 |
| Civil Twilight End | 18:55 |
| Nautical Twilight End | 19:29 |
| Astronomical Twilight End | 20:03 |
| Moon Illumination | 7.06% |