River bathing, lamp lighting, fasting, and donations are key rituals during the sacred month of Kartik. Worship of Lord Shiva and Lord Vishnu is encouraged. Scholars say observing Kartik rituals, especially on Mondays, brings immense merit, equal to an Ashwamedha Yaga. Karthika Snanam during Brahma Muhurta, under the Krittika star, to promote good health.