The year 1998 in the Tamil calendar corresponds primarily to the Bahudhanya (1998–1999) year, which followed the year earlier in the Gregorian period. Year Name: Bahudhanya (Pravaba concluded in early 1998). Shaka Samvat 1920 and Kaliyuga 5099. Primary Publication: A notable version of this period was the Vekudhana Varsha Vakya Panchangam 1998-1999 , authored by Venkatesa Iyer and Raghunatha Iyer. Key Components and Structure The Vakya Panchangam is built on the Siddhantic
The is one of the most traditional and revered Hindu almanacs used extensively in South India, particularly in Tamil Nadu, by followers of the Vaikhanasa and Smarta traditions. Unlike the modern "Drik Ganitha" (calculated based on visible positions of planets), the Vakya Panchangam is based on ancient Vakyas (sentences/declarations) derived from the Surya Siddhanta . Vakya Panchangam 1998
It is important to note that by 1998, astronomy had advanced significantly. The Vakya Panchangam has a known systemic error (a Bija correction ) that drifts over centuries. For example, in 1998, Vakya calculated the Vernal Equinox slightly later than the actual astronomical event. The year 1998 in the Tamil calendar corresponds