| Geyser | 1991-06-24 |
|---|---|
| Echinus | 1006 maj, 1841, 1932 min, 1947 min, 1957, 2047, 2137 |
| Gray Lakes | 1200 |
| Ledge Spring | 1925 |
| Whirligig | 1023 |
| Values for Old Faithful Area | 1991-06-24 |
|---|---|
| Astronomical Twilight Begin | 03:10 |
| Nautical Twilight Begin | 04:13 |
| Civil Twilight Begin | 05:02 |
| Sunrise | 05:39 |
| Sunset | 21:11 |
| Civil Twilight End | 21:48 |
| Nautical Twilight End | 22:37 |
| Astronomical Twilight End | 23:40 |
| Moon Illumination | 92.61% |