According to the religious literature, Avahan implies invocation. The invocation of Goddess Saraswati is known as Saraswati Avahan. The most recent three days of Navratri is generally devoted to goddess Saraswati. It is commended in the Hindu month of Ashwin on the seventh day of waxing moon on Mahasaptami.
The Hindu sacred writings have decisively said about the ideal opportunity for the Saraswati puja. The Saraswati Avahan ought to be seen amid Mul Nakshatra, Saraswati Puja ought to be finished amid Purva Ashadha Nakshatra, Balidan Puja ought to be finished amid Uttara Ashadha Nakshatra and Saraswati Visarjan ought to be finished amid Shravana Nakshatra. In Maharashtra and South India, Saraswati pooja initiates with Saraswati Avahan on Maha Saptami and finishes on Vijayadashami with Saraswati Visarjan.