| Geyser | 1965-08-31 |
|---|---|
| Blue | 0930 |
| Ebony | 0924, 1237, 1514, 1755 |
| Echinus | 0908, 1011, 1116, 1217, 1325, 1425, 1531, 1636, 1741 |
| Ledge | 0800-1645 |
| Little Whirligig | 1021, 1301 ie, 1747 ie |
| Steamboat | 0815-1615 |
| Values for Old Faithful Area | 1965-08-31 |
|---|---|
| Astronomical Twilight Begin | 05:00 |
| Nautical Twilight Begin | 05:38 |
| Civil Twilight Begin | 06:14 |
| Sunrise | 06:44 |
| Sunset | 20:02 |
| Civil Twilight End | 20:32 |
| Nautical Twilight End | 21:08 |
| Astronomical Twilight End | 21:46 |
| Moon Illumination | 24.76% |