For this year (according to today’s date, 15 March 2026):

• Mahavir Janma Kalyanak / Mahavir Jayanti falls on:

• Tithi (Jain lunar date): Chaitra Shukla 13 (Chaitra Sud Teras)

Śvetāmbara Mūrtipūjak sanghs, including Achalgachchh, observe Mahavir Jayanti on this same Chaitra Shukla 13, so Achalgachchh will also celebrate it on 31 March 2026.

Exact programme details (snatra‑pūjā time, pravachan, rath‑yātrā, pālna‑ji, etc.) will depend on your local Achalgachchh sangh/derasar, so you can confirm timings with them directly.