| Geyser | 1966-08-06 |
|---|---|
| Echinus | 0843, 0940, 1034, 1132, 1228, 1326, 1424, 1521, 1619, 1715 |
| Ledge | 1015 |
| Steamboat | 0800 |
| Valentine | 0830 A |
| Values for Old Faithful Area | 1966-08-06 |
|---|---|
| Astronomical Twilight Begin | 04:16 |
| Nautical Twilight Begin | 05:02 |
| Civil Twilight Begin | 05:43 |
| Sunrise | 06:15 |
| Sunset | 20:42 |
| Civil Twilight End | 21:15 |
| Nautical Twilight End | 21:56 |
| Astronomical Twilight End | 22:42 |
| Moon Illumination | 79.77% |