| Geyser | 1989-09-20 |
|---|---|
| Echinus | 1013, 1135 maj, 1255, 1335, 1420, 1455, 1544 |
| Fireball | 1120, 1520 |
| Scummy Pool | 1430 |
| Vixen | 1134 |
| Whirligig | 1345, 1427, 1517, 1607 |
| Values for Old Faithful Area | 1989-09-20 |
|---|---|
| Astronomical Twilight Begin | 05:30 |
| Nautical Twilight Begin | 06:05 |
| Civil Twilight Begin | 06:39 |
| Sunrise | 07:08 |
| Sunset | 19:24 |
| Civil Twilight End | 19:53 |
| Nautical Twilight End | 20:27 |
| Astronomical Twilight End | 21:03 |
| Moon Illumination | 70.26% |