| Geyser | 1979-06-13 |
|---|---|
| Constant | 0905, 1003, 1045 |
| Dark Cavern | 1035 |
| Echinus | 0910 A, 1038, 1208 |
| Little Whirligig | 1050 |
| Orby | 1540 |
| Whirligig | 0937 ie, 1115 |
| Values for Old Faithful Area | 1979-06-13 |
|---|---|
| Astronomical Twilight Begin | 03:10 |
| Nautical Twilight Begin | 04:13 |
| Civil Twilight Begin | 05:01 |
| Sunrise | 05:37 |
| Sunset | 21:08 |
| Civil Twilight End | 21:45 |
| Nautical Twilight End | 22:33 |
| Astronomical Twilight End | 23:35 |
| Moon Illumination | 89.93% |