Answer

For the Śvetāmbara Jain tradition, Paryushan Parva in 2026 begins on Tuesday, September 8, 2026, and Samvatsari is on Tuesday, September 15, 2026. ( drikpanchang.com)

Explanation

Paryushan is the main Śvetāmbara Jain observance; Digambara Jains observe Das Lakshana Parva instead, so the exact dates can differ by tradition. ( jainpedia.org)

Takeaway

If you mean the common Śvetāmbara Paryushan, the 2026 dates are September 8 to September 15, 2026. ( drikpanchang.com)