Answer

For Shwetambar Paryushan 2026, the commonly observed dates are:

• Start: Tuesday, 8 September 2026
• End / Samvatsari: Tuesday, 15 September 2026

For Digambar Das Lakshan Parva 2026:

• Start: Tuesday, 15 September 2026
• End: Thursday, 24 September 2026
• Kshamavani: Friday, 25 September 2026

About Acchagaccha

If by “Acchagaccha” you mean the Achalgaccha / Achal Gaccha tradition within Shwetambar Jainism, local observance may sometimes follow a specific gaccha tradition or local panchang.

So for exact Acchagaccha Paryushan 2026 dates, you should confirm with your local Achalgaccha sangh, upashray, derasar, or Jain panchang.

Takeaway

The widely followed Shwetambar Paryushan in 2026 is 8 September to 15 September 2026, with Samvatsari on 15 September 2026. For Acchagaccha-specific observance, local sangh confirmation is best.