| Geyser | 1979-08-06 |
|---|---|
| Echinus | 1100, 1430 |
| Little Whirligig | 0930 |
| Values for Old Faithful Area | 1979-08-06 |
|---|---|
| Astronomical Twilight Begin | 04:16 |
| Nautical Twilight Begin | 05:02 |
| Civil Twilight Begin | 05:42 |
| Sunrise | 06:15 |
| Sunset | 20:42 |
| Civil Twilight End | 21:15 |
| Nautical Twilight End | 21:56 |
| Astronomical Twilight End | 22:42 |
| Moon Illumination | 94.67% |