| Values for Old Faithful Area | 1998-10-19 |
|---|---|
| Astronomical Twilight Begin | 06:06 |
| Nautical Twilight Begin | 06:40 |
| Civil Twilight Begin | 07:14 |
| Sunrise | 07:43 |
| Sunset | 18:32 |
| Civil Twilight End | 19:02 |
| Nautical Twilight End | 19:36 |
| Astronomical Twilight End | 20:09 |
| Moon Illumination | 1.23% |