Varshitap Parna in 2026 will be on Vaishakh Shukla Tritiya (Akshay Tritiya), which falls on:

Sunday, 19 April 2026 (in most India-based Jain panchangs)

Some overseas Jain centers (e.g. UK/US) may keep Parna on Monday, 20 April 2026 because of local sunrise and tithi timings, so it is always best to confirm with your local Jain Panchang or derasar.

You can also see related discussion here