| Geyser | 1991-07-07 |
|---|---|
| Constant | 1100 |
| Dark Cavern | 1107 maj |
| Echinus | 0950, 1030, 1203, 1245 min, 1302, 1351 min, 1406 maj |
| Whirligig | 1103 |
| Values for Old Faithful Area | 1991-07-07 |
|---|---|
| Astronomical Twilight Begin | 03:23 |
| Nautical Twilight Begin | 04:22 |
| Civil Twilight Begin | 05:10 |
| Sunrise | 05:46 |
| Sunset | 21:10 |
| Civil Twilight End | 21:46 |
| Nautical Twilight End | 22:33 |
| Astronomical Twilight End | 23:33 |
| Moon Illumination | 27.46% |