Science and know-how was so advanced At the moment that we can find the main astronomical text with diverse astronomical attributes like calendrical scientific studies, astronomical calculations between 6th and 4th century BCE. This text is named as Vedanga Jyotisha which was usually implemented for timing social and spiritual situations. https://www.dailypioneer.com/2025/page1/india-rejects-arbitration-ruling-on-iwt.html