| Geyser | 1997-11-21 |
|---|---|
| Castle | 0235 E, 1415 E |
| Values for Old Faithful Area | 1997-11-21 |
|---|---|
| Astronomical Twilight Begin | 05:45 |
| Nautical Twilight Begin | 06:20 |
| Civil Twilight Begin | 06:55 |
| Sunrise | 07:27 |
| Sunset | 16:50 |
| Civil Twilight End | 17:22 |
| Nautical Twilight End | 17:58 |
| Astronomical Twilight End | 18:32 |
| Moon Illumination | 56.91% |