Tithi means the lunar day in the Jain (and broader Indian) calendar. However, your question is incomplete. Do you want to know:

• the tithi for a specific date, or
• today’s tithi in a Jain calendar, or
• what a particular tithi name (e.g., Pratipada, Panchami, Purnima) signifies?

If you specify a date (for example, November 18, 2025) or the exact tithi name you’re asking about, I can tell you its meaning and significance in Jain Dharma.