In Jainism, there isn’t a universal rule that each Tirthankar has a fixed day of the week or calendar date for worship. Devotees may respectfully venerate any Tirthankar, and many people choose a personal Ishta Dev (favorite Tirthankar) for daily worship. Major festivals are celebrated for specific Tirthankaras (e.g., the birth of Mahavira on Mahavir Jayanti), and there are collective practices like Snatra Puja, Paryushan, and Das Lakshana that honor all Tirthankaras. The two main Jain traditions (Digambar and Śvētāmbara) share the same broad approach, though festival dates and rituals can vary by community.

Key points:

• No fixed “Tirthankar-to-day” assignments exist for all 24 Tirthankaras.
• Daily or periodic worship can be for any Tirthankar chosen by the devotee.
• Major celebrations include Mahavir Jayanti for Mahavira and other festival days that honor different Tirthankaras, as well as rituals that commemorate all 24 Tirthankaras.

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