| Geyser | 1991-08-26 |
|---|---|
| Echinus | 0945, 1033 maj, 1224, 1400, 1458 |
| Fireball | 1308 |
| Morning | 0036 E, 0403, 0735, 1055, 1528, 1945, 2303 |
| Whirligig | 1148 |
| Values for Old Faithful Area | 1991-08-26 |
|---|---|
| Astronomical Twilight Begin | 04:51 |
| Nautical Twilight Begin | 05:31 |
| Civil Twilight Begin | 06:08 |
| Sunrise | 06:38 |
| Sunset | 20:11 |
| Civil Twilight End | 20:41 |
| Nautical Twilight End | 21:18 |
| Astronomical Twilight End | 21:58 |
| Moon Illumination | 99.23% |