It depends on your location
The constellation Cetus can be best viewed in the fall season in the Northern Hemisphere. It is visible in the evening sky during autumn months, from September to December. Look for Cetus in the southeastern sky after sunset during these months for optimal viewing.
If you are in the northern hemisphere, winter is the best time to observe Leo the Lion.
There's only one sky - Gemini is a constellation best visible during the late fall, winter, & early spring.
Summer time. Lyra is part of the Summer Triangle.
The best time to view Pisces is in the month of November around 9pm.
The Fall.
The Capricornus constellation is best viewed during the summer months in the southern hemisphere and during the winter months in the northern hemisphere. It is typically visible in the early evening in late summer and early autumn in the northern hemisphere and late winter and early spring in the southern hemisphere.
Epsilon Cancri is a star in the constellation cancer which can be best viewed at 21:00 (9 p.m.) during the month of March.
The constellation Hercules is best viewed in July.
Winter
september to october
summer