| Geyser | 1966-07-26 |
|---|---|
| Blue | 1950 |
| Echinus | 0755, 0910, 1022, 1131, 1245, 1358, 1514, 1627 |
| Ledge | 1058 |
| Steamboat | 0915 |
| Values for Old Faithful Area | 1966-07-26 |
|---|---|
| Astronomical Twilight Begin | 03:55 |
| Nautical Twilight Begin | 04:46 |
| Civil Twilight Begin | 05:29 |
| Sunrise | 06:03 |
| Sunset | 20:56 |
| Civil Twilight End | 21:30 |
| Nautical Twilight End | 22:13 |
| Astronomical Twilight End | 23:04 |
| Moon Illumination | 65.67% |