| Geyser | 1965-07-31 |
|---|---|
| Blue | 0920 ie |
| Ebony | 1142 |
| Echinus | 0822, 0921, 1022, 1124, 1224, 1328, 1432, 1530, 1640, 1740 |
| Ledge | 1730 |
| Little Whirligig | 1350 ie, 1615 |
| Steamboat | 0830-1720 |
| Values for Old Faithful Area | 1965-07-31 |
|---|---|
| Astronomical Twilight Begin | 04:05 |
| Nautical Twilight Begin | 04:53 |
| Civil Twilight Begin | 05:35 |
| Sunrise | 06:09 |
| Sunset | 20:50 |
| Civil Twilight End | 21:23 |
| Nautical Twilight End | 22:05 |
| Astronomical Twilight End | 22:53 |
| Moon Illumination | 11.18% |