| Geyser | 1979-06-10 |
|---|---|
| Arsenic | 1503 |
| Constant | 1514, 1540 |
| Little Whirligig | 1435 ie, 1545 |
| Whirligig | 1500 |
| Values for Old Faithful Area | 1979-06-10 |
|---|---|
| Astronomical Twilight Begin | 03:12 |
| Nautical Twilight Begin | 04:13 |
| Civil Twilight Begin | 05:01 |
| Sunrise | 05:38 |
| Sunset | 21:06 |
| Civil Twilight End | 21:43 |
| Nautical Twilight End | 22:31 |
| Astronomical Twilight End | 23:32 |
| Moon Illumination | 99.91% |