| Geyser | 1979-06-25 |
|---|---|
| Dark Cavern | 1050 |
| Echinus | 0919, 1040, 1202 |
| Little Whirligig | 1055 |
| Steamboat | 1200 |
| Whirligig | 0950, 1350 |
| Values for Old Faithful Area | 1979-06-25 |
|---|---|
| Astronomical Twilight Begin | 03:11 |
| Nautical Twilight Begin | 04:14 |
| Civil Twilight Begin | 05:02 |
| Sunrise | 05:39 |
| Sunset | 21:12 |
| Civil Twilight End | 21:48 |
| Nautical Twilight End | 22:37 |
| Astronomical Twilight End | 23:40 |
| Moon Illumination | 0.56% |