Sundays are for Surya devta or Sun god. Mondays are for lord Shiva. Tuesdays are for lord Hanuman. Wednesdays are for lord Ganesha and Lord Vittal. Thursdays are for lord Vishnu and lord Brihaspati. Fridays are for Maa Lakshmi, Durga, and incarnations of Shakti. Saturdays are for lord Shani.