| Geyser | 1999-05-14 |
|---|---|
| Castle | 0720 E, 1353 E |
| Great Fountain | 0258 E, 1728 E |
| Values for Old Faithful Area | 1999-05-14 |
|---|---|
| Astronomical Twilight Begin | 03:51 |
| Nautical Twilight Begin | 04:40 |
| Civil Twilight Begin | 05:23 |
| Sunrise | 05:56 |
| Sunset | 20:42 |
| Civil Twilight End | 21:15 |
| Nautical Twilight End | 21:58 |
| Astronomical Twilight End | 22:47 |
| Moon Illumination | 2.44% |