So how long does the upwas of shwetambar lasts?
Shwetambar upwas (Paryushan Parva) lasts 8 days. It ends with Samvatsari, the day of forgiveness. Digambar Jains observe a longer period called Das Lakshan Parva, which lasts 10 days. Some individuals may fast on additional days outside these main periods, but the principal annual upwas are 8 days for Shwetambar and 10 days for Digambar.