| Geyser | 1981-06-26 |
|---|---|
| Blue | 1104 |
| Echinus | 0850, 1221, 1427, 1533 |
| Fireball | 1200 |
| Sunday | 1900 |
| Whirligig | 1055, 1154 |
| Values for Old Faithful Area | 1981-06-26 |
|---|---|
| Astronomical Twilight Begin | 03:12 |
| Nautical Twilight Begin | 04:14 |
| Civil Twilight Begin | 05:03 |
| Sunrise | 05:40 |
| Sunset | 21:12 |
| Civil Twilight End | 21:48 |
| Nautical Twilight End | 22:37 |
| Astronomical Twilight End | 23:40 |
| Moon Illumination | 38.01% |