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Pitru Yajna & Ancestral Rites · Shradham Vigyan

Ancestral Ritual Schedules, Calculated to the Exact Tithi & Kala

Fulfill your sacred filial duty (Pitru Rina) with astronomical precision. Generate comprehensive 1st-Year rites, Annual Abdikam schedules, or Mahalaya Paksha Pitru Tarpana dates—personalized to your tradition, Gotra, and GPS coordinates.

3 Core Schedules Aparahna & Kutapa Kala Smartha & Vaishnava Rules GPS Coordinate Calibrated
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First Year Monthly Shradham Rituals Schedule
Complete 365-Day Rites

First Year Monthly Shradham Rituals Schedule

Complete 365-day chronological observance roadmap following departure

A comprehensive, day-by-day sacred calendar covering the initial 13 days of Antyesti & Dasagatram, all 12 monthly Masikams, Traipakshikam, Oona Shanmasikam, and the culminating 1st Death Anniversary (Prathama Abdikam) 3-day observances.

Tripindi & Dasagatram (Initial 13 Days Observances)
12 Monthly Masikams (Calibrated to exact Lunar Tithis)
Traipakshikam (Crucial 45th-day milestone rite)
+ 3 more sacred observances included
Generate
Yearly Shraddham Rituals Schedule
Annual Lifelong Observance

Yearly Shraddham Rituals Schedule

Annual Abdikam calculation grounded in family tradition & local solar/lunar Panchanga

Accurate determination of the exact Lunar Tithi (Thithi) for annual ancestral remembrance (Varshika Shradham), pinpointing the auspicious Aparahna and Kutapa Kala windows for your specific city.

Annual Abdikam exact calendar date determination
Kutapa & Aparahna Kala optimal 2-hour offering windows
Panchanga alignment (Chandramana Amanta/Purnimanta & Sauramana traditions)
+ 3 more sacred observances included
Generate
Mahalaya Paksha Pitru Tarpana Schedule
Auspicious 15-Day Fortnight

Mahalaya Paksha Pitru Tarpana Schedule

Sacred 15-day ancestral fortnight schedule for honoring past generations

A complete guide and daily schedule for the sacred 15-day lunar fortnight in Bhadrapada/Ashwina (Pitru Paksha). Pinpoints dates for Bharani Shradham, Avidhava Navami, Sanyasi Dwadashi, and Sarva Pitru Amavasya.

Daily 15-day Pitru Tarpana Aparahna Kala Muhurta timings
Maha Bharani Shradham (Crucial day with benefits akin to Gaya Shradha)
Avidhava Navami (Special rites for mothers and wives predeceasing husbands)
+ 4 more sacred observances included
Generate
Vedic Wisdom & Scriptural Injunction
“देवपितृकार्याभ्यां न प्रमदितव्यम्”

— Taittiriya Upanishad & Garuda Purana

“Never be negligent towards your duties to the Divine and towards your Ancestors.”

Pitru Rina Resolution

Every born soul inherits Pitru Rina (ancestral debt). Annual Shradham and Tarpana satisfy forefathers, transmuting ancestral discontent into health, progeny, and prosperity.

Aparahna Kala Alignment

Pitrus receive offerings exclusively during the 8th & 9th Muhurtas (Kutapa and Rauhina periods). Calculations ensure rituals align with this exact planetary window.

Sampradaya Integrity

Whether your family observes Smartha, Vadakalai, Tengalai, or Madhwa traditions, our calendar accounts for specific Ekadashi, Sankranti, and Adhika Maasa differences.

Engineered with Classical Jyotish Precision

Every ritual date and Kala window is validated through astronomical ephemeris and classical texts.

Astronomical Tithi Precision

NASA JPL & Drik-Panchanga calculations cross-referenced with exact local sunrise and sunset times.

Aparahna & Kutapa Kala

Pinpoints the 8th and 9th Muhurtas of the day when ancestors (Pitrus) are scripturally attuned to receive oblations.

Multi-Sampradaya Guidance

Faithfully accommodates distinct rules for Smartha, Sri Vaishnava (Vadakalai/Tengalai), Madhwa, and regional Smritis.

Global Geo-Calibration

Accurate observance dates whether your rites take place in Varanasi, Bengaluru, London, California, or Sydney.

How It Works

Generating Your Family's Shradham Schedule

01

Departure & Lineage

Provide the date, time, and city of departure, along with family Gotra and tradition.

02

Astronomical Tithi Resolution

Our engine computes the true lunar Tithi factoring sunrise, sunset, and solar transits.

03

Aparahna Kala Calibration

Calculates the exact 2-hour offering window for optimal spiritual efficacy.

04

Digital Folio & Reminders

Download complete printable ritual schedule with automated date reminders.

Clarifications & Guidance

Frequently Asked Questions on Shradham

In Vedic astronomy, Shradham Tithi is fundamentally determined by the Tithi prevailing during Aparahna Kala (the afternoon period between roughly 1:15 PM and 3:45 PM), not merely at sunrise. If a Tithi starts after sunrise but covers Aparahna, our calculation engine accurately designates that day according to Nirnaya Sindhu and Dharma Sindhu scriptures.
Sacred Filial Responsibility

Ensure Forefathers Receive Their Sacred Libations on Time

Generate an authentic, location-specific Shradham ritual schedule verified against classical Jyotish texts.

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