Lalita Jayanti (Shodashi Mahavidya Jayanti) is the first appearance day (day of incarnation) of Goddess Lalitha, who is also referred to as one of the Dashamavidyas. In 2015, Lalita Jayanti date is January 5.
Lalita Jayanti is observed on Margashirsha Purnima, the Full Moon in Margashirsha Month in Hindu calendar. It usually falls in December as per Gregorian calendar.
Goddess Lalitha tripurasundari is the third of the dasamahavidyas who is the Goddess of Srichakra. She is also known as Goddess Rajarajeshwari meaning the one who rules the universe.
She is also worshipped as Goddess kamakhya in many parts of the world. One of the famous kamakhya temples is in Assam.