| Geyser | 1999-05-10 |
|---|---|
| Arsenic | 0717 |
| Castle | 0038 E, 0723 E, 2129 E |
| Constant | 0714 |
| Dark Cavern | 0620 |
| Great Fountain | 0433 E, 1638 E |
| Pinto | 0714 |
| Values for Old Faithful Area | 1999-05-10 |
|---|---|
| Astronomical Twilight Begin | 03:59 |
| Nautical Twilight Begin | 04:46 |
| Civil Twilight Begin | 05:28 |
| Sunrise | 06:01 |
| Sunset | 20:37 |
| Civil Twilight End | 21:10 |
| Nautical Twilight End | 21:52 |
| Astronomical Twilight End | 22:39 |
| Moon Illumination | 34.14% |