Astronomical Precision in Surya Siddhanta: A Comparative Analysis of Vedic Cosmic Time Cycles and Modern Astrophysical Measurements

This paper presents a systematic comparative 

analysis between the Surya Siddhanta — an 

ancient Indian mathematical astronomy text — 

and modern astrophysical measurements. Five 

key findings are examined: (1) the Truti time 

unit precision at microsecond scale, confirmed 

by GPS relativistic corrections at 99.61% 

accuracy; (2) the Kalpa cosmic time cycle of 

4.32 billion years matching the Solar System 

age within 5-6%, independently confirmed by 

three Vedic texts; (3) the cross-cultural 

significance of the base number 432,000, 

matching the solar radius within 0.07%; 

(4) JWST 2025 galaxy rotation data supporting 

the Kala Chakra cyclic model; and (5) a 

proposed hypothesis connecting Pitru Devata 

of Magha Nakshatra to stellar remnants, 

illustrated by the Vela Pulsar. This is a 

companion paper to Project Padmanabha: Vedic 

Cosmology and Modern Physics. All findings 

are clearly labeled: CONFIRMED, STRONG 

PARALLEL, THEORETICAL, or HYPOTHESIS. 

Author: Gayathri Devi Chapati, Independent 

Researcher, India. ORCID: 0009-0000-1757-1473