| Geyser | 1979-07-19 |
|---|---|
| Africa | 1800 |
| Constant | 1800 |
| Dark Cavern | 1355 |
| Echinus | 1105 maj, 1250, 1400 |
| Little Whirligig | 1050, 1800 |
| Whirligig | 0940, 1110 |
| Values for Old Faithful Area | 1979-07-19 |
|---|---|
| Astronomical Twilight Begin | 03:42 |
| Nautical Twilight Begin | 04:36 |
| Civil Twilight Begin | 05:21 |
| Sunrise | 05:56 |
| Sunset | 21:02 |
| Civil Twilight End | 21:37 |
| Nautical Twilight End | 22:22 |
| Astronomical Twilight End | 23:16 |
| Moon Illumination | 21.71% |