Kartik is the Holiest month in the lunar calendar. It usually overlaps with the months of October & November in the English calendar. Kartik Maas, also know as Damodar Maas, is described in the scriptures as the best among months for performing austerities. Japa - chanting the holy names of the Lord. Worship the Lord by offering ghee lamps (diyas), flowers, incense, food etc. Practice brahmacharya -celibacy. Worship of Tulasi Devi. Give charity. Perform austerities.