| Geyser | 1999-06-09 |
|---|---|
| Echinus | 1400 |
| Grand | 0901 E, 2127 E |
| Great Fountain | 0843 E, 1738 E |
| Lone Pine | 0555 E, 2053 E |
| Whirligig | 0930 |
| Values for Old Faithful Area | 1999-06-09 |
|---|---|
| Astronomical Twilight Begin | 03:13 |
| Nautical Twilight Begin | 04:14 |
| Civil Twilight Begin | 05:02 |
| Sunrise | 05:38 |
| Sunset | 21:06 |
| Civil Twilight End | 21:42 |
| Nautical Twilight End | 22:30 |
| Astronomical Twilight End | 23:31 |
| Moon Illumination | 27.68% |