| Values for Old Faithful Area | 1998-04-16 |
|---|---|
| Astronomical Twilight Begin | 04:50 |
| Nautical Twilight Begin | 05:29 |
| Civil Twilight Begin | 06:06 |
| Sunrise | 06:37 |
| Sunset | 20:08 |
| Civil Twilight End | 20:39 |
| Nautical Twilight End | 21:16 |
| Astronomical Twilight End | 21:55 |
| Moon Illumination | 83.57% |