text: वहां से calendar आया. That's how the western calendar sort of came about. But when you start looking at this, सतयुग, द्वापर, त्रेता and कलियुग, these are the four stages. But then it starts with राम, then it goes to कृष्ण, then it goes to other other stages. So it's रामायण, then महाभारत