The Capricornus constellation is best viewed during the late summer and early autumn months, specifically from August to October in the Northern Hemisphere.

Here's why:

* Position: Capricornus is a southern constellation, meaning it's located in the sky above the southern hemisphere. As the Earth orbits the sun, the position of constellations changes throughout the year.

* Visibility: In the late summer and early autumn, the Earth's position in its orbit allows the Capricornus constellation to be visible for a longer period during the night, especially in the early evening hours.

While Capricornus can be seen in the early evening in the Northern Hemisphere, it is less prominent than in the Southern Hemisphere. It's best viewed from locations with a clear southern horizon.