In addition, I have shown that time of ~5200 BCE can be falsified as the timing of Ramayana, based on numerous astronomy observations of Valmiki Ramayana, that Shri Bhatnagar did not bother to consider.
There are some who believe such exercises in general are waste of time and one should focus on the message of the epic.
To keep this in context, remember that the Mature Harappan Period was from 2500 – 1900 BCE.
As the dates are pushed back into the Early Harappan period, it also has to reconcile with the material goods present during that period.
But whatever be the technique — textual analysis or astronomical analysis — it has to reconcile with what archaeology has found on the ground.
For example, the text mentions Yavanas and the White Huns who obviously did not exist in the 3rd millennium BCE.Dwaraka had settlements from the Harappan period, but then none of the sites associated with Krishna such as Mathura had anyone living there.This is the problem that people who push for an earlier date fail to address.This happened around 800 BCE according to the data from Kaushambi, and since the flood happened during the time of the fifth descendant of Parikshit, the war could have happened around 900 BCE.This 900 BCE date is based on archaeology and other ways of analyzing the text and astronomical data reveal other dates.