30 Tithis — Lunar Days of the Vedic Panchang

Understanding Tithis in the Vedic Panchang

The Tithi system forms the backbone of the Vedic Panchang — the five-limbed Hindu calendar that also includes Vara (weekday), Nakshatra (lunar mansion), Yoga, and Karana. While a solar day is defined by the Sun's transit, a Tithi is determined purely by the Moon's angular distance from the Sun — each 12° increment marking a new lunar day. Because the Moon's speed varies, Tithis can range from 19 to 26 hours in duration, meaning a solar day may contain parts of two or even three Tithis.

The classification of Tithis into five Varga groups — Nanda, Bhadra, Jaya, Rikta, and Purna — provides the foundation for Muhurat (auspicious timing) selection. Each group is ruled by a Graha and carries distinct energetic qualities. When selecting a Muhurat for important activities like marriage, house entry, or business inauguration, astrologers combine the Tithi group with the ruling Nakshatra, Vara, and the position of planets in the twelve houses to determine the most favorable moment. Certain Tithis like Ekadashi hold special spiritual significance and are observed across all Hindu traditions.

Beyond Muhurat selection, Tithis play a crucial role in festival timing — nearly every major Hindu festival is determined by its Tithi rather than a fixed solar date. Diwali falls on Krishna Chaturdashi-Amavasya of Kartik, Holi on Shukla Purnima of Phalguna, and Navaratri spans Pratipada to Navami of Shukla Ashwin. Understanding the Tithi system also deepens interpretation of birth charts — the Tithi at birth connects to the Dasha timing system and reveals innate emotional and spiritual tendencies linked to the Moon-Sun relationship. Combined with Yoga analysis and remedial measures, Tithi awareness empowers practitioners to live in harmony with lunar rhythms and make well-timed decisions.