| Geyser | 1966-07-09 |
|---|---|
| Ebony | 1005, 1847 |
| Echinus | 0856, 0958, 1100, 1202, 1301, 1402, 1504, 1611, 1711 |
| Steamboat | 1030 |
| Values for Old Faithful Area | 1966-07-09 |
|---|---|
| Astronomical Twilight Begin | 03:25 |
| Nautical Twilight Begin | 04:24 |
| Civil Twilight Begin | 05:11 |
| Sunrise | 05:47 |
| Sunset | 21:09 |
| Civil Twilight End | 21:45 |
| Nautical Twilight End | 22:32 |
| Astronomical Twilight End | 23:30 |
| Moon Illumination | 65.64% |