| Values for Old Faithful Area | 1998-10-13 |
|---|---|
| Astronomical Twilight Begin | 05:59 |
| Nautical Twilight Begin | 06:33 |
| Civil Twilight Begin | 07:06 |
| Sunrise | 07:36 |
| Sunset | 18:43 |
| Civil Twilight End | 19:12 |
| Nautical Twilight End | 19:45 |
| Astronomical Twilight End | 20:19 |
| Moon Illumination | 41.94% |