Complex sentence: Atlas TV is the first television in Montenegro that introduced broadcasting movies by their genre through theme nights: blockbusters on Mondays, classics on Tuesdays, sf/horror on Wednesdays, Comedies on Thursdays and movies from independent productions on Fridays.
Split into simpler sentences: Atlas TV is the first television in Montenegro that introduced broadcasting movies by their genre. They have theme nights: on Mondays they show blockbusters, classics on Tuesdays, sf/horror on Wednesdays, Comedies on Thursdays and movies from independent productions on Fridays.