| Geyser | 1966-06-20 |
|---|---|
| Cistern Spring | 0800 |
| Ebony | 1445, 2028 A |
| Echinus | 0908, 1020, 1131, 1246, 1512, 1626, 2004 |
| Ledge | 0940 min, 1049 maj |
| Steamboat | 0810 |
| Values for Old Faithful Area | 1966-06-20 |
|---|---|
| Astronomical Twilight Begin | 03:09 |
| Nautical Twilight Begin | 04:12 |
| Civil Twilight Begin | 05:01 |
| Sunrise | 05:38 |
| Sunset | 21:11 |
| Civil Twilight End | 21:48 |
| Nautical Twilight End | 22:36 |
| Astronomical Twilight End | 23:40 |
| Moon Illumination | 2.68% |