Answer

Posh Dashami is the Jain observance linked with Shri Parshvanath’s birth/diksha and is traditionally kept on Magshar Vad 9–11. In the 2025/26 Jain calendar cycle, it falls on Saturday, 13 December 2025; the next Posh-month Dashami tithi shown in the following cycle is Friday, 1 January 2027. ( jainmuseum.com)