| Geyser | 1999-06-10 |
|---|---|
| Echinus | 1120, 1315, 1629 |
| Fireball | 1647, 1650 |
| Grand | 0833 E, 1913 E |
| Great Fountain | 0653 E, 1803 E |
| Lone Pine | 1147 E |
| Values for Old Faithful Area | 1999-06-10 |
|---|---|
| Astronomical Twilight Begin | 03:12 |
| Nautical Twilight Begin | 04:13 |
| Civil Twilight Begin | 05:01 |
| Sunrise | 05:38 |
| Sunset | 21:06 |
| Civil Twilight End | 21:43 |
| Nautical Twilight End | 22:31 |
| Astronomical Twilight End | 23:32 |
| Moon Illumination | 17.91% |