| Geyser | 1959-09-10 |
|---|---|
| Little Whirligig | 1511, 1555, 1711 |
| Whirligig | 1627 |
| Values for Old Faithful Area | 1959-09-10 |
|---|---|
| Astronomical Twilight Begin | 04:14 |
| Nautical Twilight Begin | 04:51 |
| Civil Twilight Begin | 05:26 |
| Sunrise | 05:55 |
| Sunset | 18:44 |
| Civil Twilight End | 19:14 |
| Nautical Twilight End | 19:49 |
| Astronomical Twilight End | 20:25 |
| Moon Illumination | 54.28% |