What is Abdikam vs Thivasam?

Both refer to the annual death-anniversary śrāddha on the ancestral tithi. “Thivasam / Thevasam / திவசம்” is the common Tamil household term; Abdikam / Ābdika is the śāstric name.

Śrāddha / Māsikam calculator

Abdikam / Abdika Śrāddha Date Calculator – Annual Death Anniversary

Abdikam (Ābdika, Aabdhikam, Varsha Śrāddha, வருஷாப்திகம்) is the first-year annual ancestral rite. After twelve Masikams (and Unabdikam), families observe the yearly śrāddha on the same ancestral tithi.

First resolve the death-day Aparāhṇa śrāddha tithi, then find the civil date about one year later when that tithi is again preferred at Aparāhṇa. Tamil speakers also search “திவசம்”, “தேவசம்”, and “thivasam calculator” for the same annual observance.

Drikganita uses local place astronomy so London, Singapore, and Chennai observers may see different civil dates for the same death tithi.

Live calculator

Results jump to the Abdikam section when available. Set your city in the header first.

Calculate Śrāddha dates

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Also evaluate the 21st-day Prathama Oona tradition (some families)

Tarpana Sankalpam

FAQ

What is Abdikam vs Thivasam?: Both refer to the annual death-anniversary śrāddha on the ancestral tithi. “Thivasam / Thevasam / திவசம்” is the common Tamil household term; Abdikam / Ābdika is the śāstric name.