Even if we assume that Lord Rama was born at the end of Treta Yuga, a total 869,114 (864,000 5114) solar years have passed.According to some scholars, the war between Rama and Ravana is supposed to have happened 880,155 solar years ago as of April 17, 2013.However, during last 30-40 years, several new scientific tools and techniques have been developed, which are capable to determining the dates of any ancient events in scientific and precise manner.For example: Multi-disciplinary scientific research reports, prepared during last three- four decades by making use of such scientific tools and techniques, were used for dating the events narrated in Valmiki Ramayan and resuts were amazing! Moon near the star Punar vasu (Pollux) in Gemini Constellation. This data was entered into the ‘Planetarium Gold’ software, the results indicated that this was exactly the location of planets/stars vis-à-vis zodiac constellations on the 10th of January noon time in the year 5114 BC if viewed from latitude/longitude of Ayodhya (25°N 81°E). By making use of software to convert solar calendar into lunar calendar, it was found that this date also happened to be the 9th day of Shukla Paksha in ‘Chaitra’ month and the time was around 12 to 1 noontime.
There are also numerous places that are indicated as the locations where various events happened in reference to the pastimes of Lord Rama and Sita. I have personally visited many of these places, such as Ramesvaram, Nasik, Hampi, and others where there are particular locations and sites that are related to the events that took place in the life and adventures of Lord Rama.Therefore the history of growth of civilization in the world is not 4 to 5 thousand years old but it is more than 10,000 years old.So far history of the world, particularly of Indian subcontinent, is based on linguistic guesswork and religious beliefs/hearsay.However, when it comes to the Ramayana and the history of Lord Rama, there have been numerous authors who have accepted the Ramayana as a history of ancient events.For example, the first Governor General of India, Sri Rajaji, wrote on the Ramayana and called it a history, as also did the English Indologist Sir William Jones.In the epic Ramayana, Sage Valmiki mentioned that when Lord Ram was born,the sun was located in Aries, saturn was in Libra, Jupiter & the moon were in Cancer, Venus was seen in Pisces while Mars was located in Capricorn.Moreover it was the ninth day of the increasingphase of the moon in the lunar month of Chaitra.Such calculations need software which can perform astronomical calculations in the past up to 1,000,000 solar years (or about 1 million solar years in the past).Pushkar Bhatnagar has done some work to date the birth time of Lord Rama.Therefore some people started travelling from south to north.Such northward migration continued for several centuries and finally when these people from south India reached the banks of Himalayan Rivers, they got climatic conditions conducive to long term development of civilization on the banks of these rivers providing security of water, food and shelter for a very long time.