| Geyser | 1979-06-23 |
|---|---|
| Arsenic | 1545 |
| Congress Pool | 1200 |
| Constant | 1313, 1501 |
| Echinus | 0905:44, 1024:09, 1200 A maj, 1403 |
| Little Whirligig | 1449 |
| Whirligig | 1542 |
| Values for Old Faithful Area | 1979-06-23 |
|---|---|
| Astronomical Twilight Begin | 03:10 |
| Nautical Twilight Begin | 04:13 |
| Civil Twilight Begin | 05:02 |
| Sunrise | 05:38 |
| Sunset | 21:11 |
| Civil Twilight End | 21:48 |
| Nautical Twilight End | 22:37 |
| Astronomical Twilight End | 23:40 |
| Moon Illumination | 1.64% |