Goddess Durga is known for her 9 forms in nine-day Navaratri festival and is worshiped by her devotees all over the world. Nine days from the day of Shukal Paksha, on the ninth day Ashwina is considered to be the most auspicious time according to Hindu calendar. Therefore it is considered the most suitable time of the year for Durga Puja. Nine forms are worshiped consecutively for nine days. Although Navratri comes four times a year.