The constellation Cygnus, the Swan, is most visible during the summer months in the Northern Hemisphere.

Here's a breakdown:

* Best viewing time: July and August evenings.

* Visible from: Late spring through early fall.

* Location: Northern Hemisphere, particularly in the northern latitudes.

Cygnus is a prominent constellation, easily recognizable by its distinctive cross shape. It's home to several bright stars, including Deneb, which forms the tail of the swan, and Albireo, a beautiful double star that marks the swan's head.