nocach

In a sentence

• Tej zimy spędzam wieczory przy kominku, a długie nocach czytam książki.

  This winter, I spend evenings by the fireplace and during long nights, I read books.

  Here, 'nocach' is the plural locative form of 'noc', indicating 'during nights' in a past context.

• Nocach pełnych gwiazd widać piękno kosmosu.

  On nights full of stars, the beauty of the cosmos can be seen.

  Here, 'nocach' is the plural locative form of 'noc', referring to conditions during or in the context of 'nights full of stars'.

• Wspomnienia o nocach wakacyjnych zawsze mnie rozweselają.

  The memories of vacation nights always cheer me up.

  Here, 'nocach' is the plural locative form of 'noc', describing the place or time context of 'vacation nights' being reminisced about.