| Geyser | 1990-08-31 |
|---|---|
| Blue | 1151 |
| Echinus | 0920, 1018, 1115, 1220 maj, 1425, 1523, 1634 |
| Fireball | 1030, 1310, 1439 |
| Little Whirligig | 1121, 1323 |
| Whirligig | 1207 |
| Values for Old Faithful Area | 1990-08-31 |
|---|---|
| Astronomical Twilight Begin | 05:00 |
| Nautical Twilight Begin | 05:38 |
| Civil Twilight Begin | 06:14 |
| Sunrise | 06:44 |
| Sunset | 20:02 |
| Civil Twilight End | 20:32 |
| Nautical Twilight End | 21:08 |
| Astronomical Twilight End | 21:46 |
| Moon Illumination | 76.66% |