| Geyser | 1965-08-12 |
|---|---|
| Echinus | 0810, 0924, 1038, 1154, 1432, 1547, 1703 |
| Ledge | 0805 |
| Steamboat | 0830-1630 |
| Values for Old Faithful Area | 1965-08-12 |
|---|---|
| Astronomical Twilight Begin | 04:27 |
| Nautical Twilight Begin | 05:11 |
| Civil Twilight Begin | 05:50 |
| Sunrise | 06:22 |
| Sunset | 20:33 |
| Civil Twilight End | 21:05 |
| Nautical Twilight End | 21:44 |
| Astronomical Twilight End | 22:28 |
| Moon Illumination | 99.99% |