Wikipedia
Paryushana
Paryushana ( Pajjosavana) is an important Jain festival celebrated in the month of August or September.
Normally Śvētāmbaras refer to it as Paryushana, while Digambaras refer it as Das Lakshana. Paryushana means "abiding, coming together". The duration of Paryusana is for eight days for Swetambar jains and ten days for jains belonging to the Digambara sect.
Paryusana is a time when the laity take on vows of study and fasting with a spiritual intensity similar to temporary monasticism.