| Geyser | 1991-07-24 |
|---|---|
| Colloidal Pool | 1200 |
| Echinus | 0910, 1020, 1120, 1220, 1328, 1410 maj, 1540 |
| Vixen | 1330 |
| Whirligig | 1335 |
| Values for Old Faithful Area | 1991-07-24 |
|---|---|
| Astronomical Twilight Begin | 03:51 |
| Nautical Twilight Begin | 04:43 |
| Civil Twilight Begin | 05:27 |
| Sunrise | 06:01 |
| Sunset | 20:58 |
| Civil Twilight End | 21:32 |
| Nautical Twilight End | 22:16 |
| Astronomical Twilight End | 23:07 |
| Moon Illumination | 94.35% |