Answer

Siddhi Tap does not have one fixed all-India start date for 2026. It is generally observed as a 44-day Jain tapasya during the monsoon/Chaturmas period, and the exact starting day is usually decided with the guidance of your guru or local Jain sangh. ( jainsite.com)

Explanation

In the 2026 Jain calendars I checked, major observances such as Varshitap, Navpad Oli, Paryushan, Samvatsari, and Chaumasi Chaudas are listed, and the calendar notes that Jain festival dates can differ by location. Siddhi Tap itself is described as a 44-day monsoon fast, with a pattern of fasting and a break after the first fast day. ( drikpanchang.com)

Spiritual Understanding

Because Siddhi Tap is a serious tapasya, Jain tradition places importance on proper timing, discipline, and guidance rather than a single universal calendar date. So for 2026, the safest and most traditional way is to begin only on the day advised by your local Jain teacher or sangh. ( jainsite.com)

Takeaway

For 2026, treat Siddhi Tap as a guided tapasya, not a fixed public festival date. The start day should be confirmed locally according to your sect, city, and guru’s advice. ( drikpanchang.com)