| Geyser | 1965-08-15 |
|---|---|
| Blue | 0800 ie |
| Echinus | 0815, 0940, 1102, 1225, 1511, 1628, 1648 |
| Ledge | 1620 |
| Little Whirligig | 1457 ie, 1640 ie |
| Values for Old Faithful Area | 1965-08-15 |
|---|---|
| Astronomical Twilight Begin | 04:33 |
| Nautical Twilight Begin | 05:15 |
| Civil Twilight Begin | 05:54 |
| Sunrise | 06:26 |
| Sunset | 20:29 |
| Civil Twilight End | 21:00 |
| Nautical Twilight End | 21:39 |
| Astronomical Twilight End | 22:22 |
| Moon Illumination | 92.32% |