A is a traditional Hindu almanac based on the "Vakya" (sentences) of ancient astronomers like Varahamihira. Unlike the Drik system, which uses modern astronomical observations, the Vakya system relies on traditional poetic formulas passed down through generations.

You can also download free or paid software that generates Vakya Panchangam:

: The Internet Archive hosts the Sri Roudri Nama Samvatsara Sidhanta Panchamgam (1980-81) , which includes planetary positions and tithi data published by TTD.

Vakhya vs Thirukanitha Panchangam Explained | PDF | Horoscope - Scribd

The government-funded Tamil Digital Library has archived hundreds of Panchangams. Search for "Vakya Panchangam 1980" or "Parahita Panchangam 1980".