Direct Answer
What is today's Tithi and when does it end?
Today's Tithi is determined by the exact 12-degree elongation between the Sun and Moon using Drik Ganita astronomical calculation and Udaya Tithi rules.
Authority Standard: Drik Ganita (IAU VSOP87/ELP2000) & Chitrapaksha Lahiri Ayanamsha
Client-Calibrated Live Astronomy: When loaded in your browser, today's instantaneous lunar-solar elongation, exact Udaya Tithi, and transition times for your chosen city are dynamically calculated client-side using IAU VSOP87/ELP2000 algorithms with zero server latency.
Astronomical Tithi Computation & Rules
In Indian mathematical astronomy (Drik Ganita), a Tithi is the precise longitudinal angular difference between the Moon and Sun. Each 12° elongation represents one Tithi. Thirty Tithis constitute one lunar month (Masa), split into Shukla Paksha (waxing bright fortnight) and Krishna Paksha (waning dark fortnight).
The 30 Canonical Tithis
- Pratipada (प्रतिपदा) — Agni Devata (Nanda)
- Dvitiya (द्वितीया) — Brahma Devata (Bhadra)
- Tritiya (तृतीया) — Gauri Devata (Jaya)
- Chaturthi (चतुर्थी) — Ganesha Devata (Rikta)
- Panchami (पञ्चमी) — Naga Devata (Poorna)
- Shashthi (षष्ठी) — Kartikeya Devata (Nanda)
- Saptami (सप्तमी) — Surya Devata (Bhadra)
- Ashtami (अष्टमी) — Shiva / Durga Devata (Jaya)
- Navami (नवमी) — Yama / Rama Devata (Rikta)
- Dashami (दशमी) — Dharma / Aryaman Devata (Poorna)
- Ekadashi (एकादशी) — Mahavishnu Devata (Nanda / Vrat)
- Dvadashi (द्वादशी) — Vishnu / Parana (Bhadra)
- Trayodashi (त्रयोदशी) — Kamadeva / Shiva (Jaya / Pradosh)
- Chaturdashi (चतुर्दशी) — Rudra / Kali (Rikta / Shivaratri)
- Purnima / Amavasya (पूर्णिमा / अमावस्या) — Chandra / Pitrus (Poorna)
Udaya Tithi Principle: For Hindu festivals and religious observances,
the Tithi prevailing at local civil sunrise governs the day (सूर्योदयकालीन तिथि).