| Geyser | 1968-08-11 |
|---|---|
| Arsenic | 1115 |
| Bear Den | 1420 |
| Ebony | 0000 A, 0930 |
| Echinus | 0851, 1005, 1040, 1155, 1230 |
| Fan-Norris | 1115 |
| Fireball | 1115 |
| Ledge | 1425, 1445 |
| Little Whirligig | 0845 |
| Values for Old Faithful Area | 1968-08-11 |
|---|---|
| Astronomical Twilight Begin | 04:26 |
| Nautical Twilight Begin | 05:10 |
| Civil Twilight Begin | 05:50 |
| Sunrise | 06:21 |
| Sunset | 20:34 |
| Civil Twilight End | 21:06 |
| Nautical Twilight End | 21:46 |
| Astronomical Twilight End | 22:30 |
| Moon Illumination | 90.99% |