| Geyser | 1997-11-23 |
|---|---|
| Castle | 0040 E, 1155 E, 2335 E |
| Values for Old Faithful Area | 1997-11-23 |
|---|---|
| Astronomical Twilight Begin | 05:47 |
| Nautical Twilight Begin | 06:22 |
| Civil Twilight Begin | 06:58 |
| Sunrise | 07:30 |
| Sunset | 16:49 |
| Civil Twilight End | 17:21 |
| Nautical Twilight End | 17:57 |
| Astronomical Twilight End | 18:31 |
| Moon Illumination | 38.02% |