| Geyser | 1990-08-10 |
|---|---|
| Echinus | 0932 maj, 1155, 1310, 1430, 1555 |
| Fearless | 1200 |
| Fireball | 1313 ie, 1433 |
| Palpitator Spring | 1200 |
| Pearl | 1200 |
| Valentine | 2056 |
| Vixen | 1040 |
| Values for Old Faithful Area | 1990-08-10 |
|---|---|
| Astronomical Twilight Begin | 04:24 |
| Nautical Twilight Begin | 05:08 |
| Civil Twilight Begin | 05:48 |
| Sunrise | 06:20 |
| Sunset | 20:36 |
| Civil Twilight End | 21:08 |
| Nautical Twilight End | 21:48 |
| Astronomical Twilight End | 22:33 |
| Moon Illumination | 85.02% |