| Geyser | 1966-06-19 |
|---|---|
| Cistern Spring | 1800 |
| Ebony | 1005, 1350, 1702 |
| Echinus | 0834, 0943, 1312, 1421, 1532, 1642, 1757 |
| Ledge | 1145 ie |
| Little Whirligig | 0930, 1525 |
| Steamboat | 1042 |
| Whirligig | 0930 |
| Values for Old Faithful Area | 1966-06-19 |
|---|---|
| Astronomical Twilight Begin | 03:09 |
| Nautical Twilight Begin | 04:12 |
| Civil Twilight Begin | 05:01 |
| Sunrise | 05:38 |
| Sunset | 21:10 |
| Civil Twilight End | 21:47 |
| Nautical Twilight End | 22:36 |
| Astronomical Twilight End | 23:39 |
| Moon Illumination | 0.23% |