| Geyser | 1989-08-22 |
|---|---|
| Arsenic | 1145 |
| Echinus | 0930, 1045, 1120, 1157, 1253, 1347, 1446, 1541 |
| Fireball | 1124, 1155, 1255 ie, 1600 ie, 1615 |
| Vixen | 1610 |
| Values for Old Faithful Area | 1989-08-22 |
|---|---|
| Astronomical Twilight Begin | 04:45 |
| Nautical Twilight Begin | 05:26 |
| Civil Twilight Begin | 06:03 |
| Sunrise | 06:34 |
| Sunset | 20:17 |
| Civil Twilight End | 20:48 |
| Nautical Twilight End | 21:25 |
| Astronomical Twilight End | 22:06 |
| Moon Illumination | 67.21% |