| Geyser | 1968-08-13 |
|---|---|
| Ebony | 0000 A, 1300 A |
| Echinus | 0856, 1042, 1130, 1205 |
| Ledge | 0000 A |
| Whistle | 0000 A |
| Values for Old Faithful Area | 1968-08-13 |
|---|---|
| Astronomical Twilight Begin | 04:30 |
| Nautical Twilight Begin | 05:13 |
| Civil Twilight Begin | 05:52 |
| Sunrise | 06:24 |
| Sunset | 20:31 |
| Civil Twilight End | 21:03 |
| Nautical Twilight End | 21:42 |
| Astronomical Twilight End | 22:25 |
| Moon Illumination | 76.15% |