| Geyser | 1966-06-26 |
|---|---|
| Cistern Spring | 1800 |
| Ebony | 1024, 1658 |
| Echinus | 0800, 0925, 1045, 1330, 1449, 1600 A |
| Ledge | 1300 |
| Steamboat | 1600 |
| Values for Old Faithful Area | 1966-06-26 |
|---|---|
| Astronomical Twilight Begin | 03:11 |
| Nautical Twilight Begin | 04:14 |
| Civil Twilight Begin | 05:03 |
| Sunrise | 05:40 |
| Sunset | 21:12 |
| Civil Twilight End | 21:48 |
| Nautical Twilight End | 22:37 |
| Astronomical Twilight End | 23:40 |
| Moon Illumination | 57.76% |