| Geyser | 1965-08-21 |
|---|---|
| Ebony | 1805 |
| Echinus | 0834, 0935, 1033, 1132, 1233, 1334, 1435, 1536, 1636, 1740 |
| Ledge | 0914 |
| Little Whirligig | 0930 ie, 1141 ie |
| Steamboat | 0800 |
| Values for Old Faithful Area | 1965-08-21 |
|---|---|
| Astronomical Twilight Begin | 04:43 |
| Nautical Twilight Begin | 05:24 |
| Civil Twilight Begin | 06:02 |
| Sunrise | 06:33 |
| Sunset | 20:19 |
| Civil Twilight End | 20:50 |
| Nautical Twilight End | 21:28 |
| Astronomical Twilight End | 22:08 |
| Moon Illumination | 38.11% |