| Geyser | 1991-09-03 |
|---|---|
| Echinus | 0830 maj, 1017, 1230, 1332, 1424, 1530 |
| Fireball | 1608 |
| Whirligig | 0900, 1050 |
| Values for Old Faithful Area | 1991-09-03 |
|---|---|
| Astronomical Twilight Begin | 05:04 |
| Nautical Twilight Begin | 05:42 |
| Civil Twilight Begin | 06:18 |
| Sunrise | 06:48 |
| Sunset | 19:57 |
| Civil Twilight End | 20:27 |
| Nautical Twilight End | 21:02 |
| Astronomical Twilight End | 21:40 |
| Moon Illumination | 33.4% |