| Geyser | 1964-08-11 |
|---|---|
| Blue | 1030 A |
| Echinus | 0810, 0922, 1016, 1120, 1429, 1534, 1640 |
| Ledge | 0900 |
| Valentine | 1412 |
| Values for Old Faithful Area | 1964-08-11 |
|---|---|
| Astronomical Twilight Begin | 03:26 |
| Nautical Twilight Begin | 04:10 |
| Civil Twilight Begin | 04:49 |
| Sunrise | 05:21 |
| Sunset | 19:34 |
| Civil Twilight End | 20:06 |
| Nautical Twilight End | 20:46 |
| Astronomical Twilight End | 21:30 |
| Moon Illumination | 14.94% |