Hindu religious customs
Traditional Hindus believe in sanatana dharma (worshiping many deities). Hindus have an elaborate system of rituals for everything related to a religious function, be it performing a simple puja (worship), conducting a complex sacrament ceremony, fasting, celebrating festivals and fairs, bathing in sacred rivers or lakes, going on a pilgrimage, or conducting a complex ceremony marriage. In addition, Hindus have the largest number of vrata (fasts) and festivals; according to P. V. Kane, there are about one thousand religious activities during the Hindu calendar year, the chief of which is Mahashivratri, dedicated to Lord Shiva.
Every date in the Hindu calendar and every day of the week are marked for some kind of worship. For example, the weekdays are named after seven of nine planets to be worshiped. These nine planets, called “Navagrahas,” are the Sun, Moon, Mars, Mercury, Jupiter...