| Geyser | 1991-06-21 |
|---|---|
| Echinus | 0855, 1020, 1035, 1145, 1245 maj, 1359, 1445, 1525, 1550, 1620 |
| Vixen | 1425 |
| Whirligig | 1110 |
| Values for Old Faithful Area | 1991-06-21 |
|---|---|
| Astronomical Twilight Begin | 03:09 |
| Nautical Twilight Begin | 04:13 |
| Civil Twilight Begin | 05:01 |
| Sunrise | 05:38 |
| Sunset | 21:11 |
| Civil Twilight End | 21:48 |
| Nautical Twilight End | 22:36 |
| Astronomical Twilight End | 23:40 |
| Moon Illumination | 70.85% |