| Geyser | 1968-08-04 |
|---|---|
| Ebony | 0000 A, 1605, 1608 |
| Echinus | 0856, 1040, 1105, 1250, 1315, 1422, 1549 |
| Fan-Norris | 1608, 1650 |
| Ledge | 1730 |
| Values for Old Faithful Area | 1968-08-04 |
|---|---|
| Astronomical Twilight Begin | 04:13 |
| Nautical Twilight Begin | 05:00 |
| Civil Twilight Begin | 05:41 |
| Sunrise | 06:13 |
| Sunset | 20:44 |
| Civil Twilight End | 21:17 |
| Nautical Twilight End | 21:58 |
| Astronomical Twilight End | 22:45 |
| Moon Illumination | 77.22% |