| Geyser | 1990-07-30 |
|---|---|
| Echinus | 0930, 1029, 1138, 1244, 1400 |
| Fireball | 1010, 1407, 1520 |
| Incline | 1300, 1840 |
| Whirligig | 1112, 1217, 1255 |
| Values for Old Faithful Area | 1990-07-30 |
|---|---|
| Astronomical Twilight Begin | 04:03 |
| Nautical Twilight Begin | 04:52 |
| Civil Twilight Begin | 05:34 |
| Sunrise | 06:08 |
| Sunset | 20:51 |
| Civil Twilight End | 21:24 |
| Nautical Twilight End | 22:07 |
| Astronomical Twilight End | 22:56 |
| Moon Illumination | 56.34% |