| Geyser | 1979-06-20 |
|---|---|
| Cistern Spring | 0830, 1350 |
| Echinus | 0837, 1136:28, 1433:10, 1549:20, 1701 maj |
| Steamboat | 0830, 1526 |
| Whirligig | 1135 ie, 1645 ie |
| Values for Old Faithful Area | 1979-06-20 |
|---|---|
| Astronomical Twilight Begin | 03:09 |
| Nautical Twilight Begin | 04:12 |
| Civil Twilight Begin | 05:01 |
| Sunrise | 05:38 |
| Sunset | 21:11 |
| Civil Twilight End | 21:47 |
| Nautical Twilight End | 22:36 |
| Astronomical Twilight End | 23:39 |
| Moon Illumination | 18.69% |