Ratha Yatra is a festival of Hindu religion and many Hindu celebrate it with deep respect. This festival is related to the moving deities of Balabhadra, Jagannath, Subhadra and Sudarshana on a ratha. This festival comes annually and they prefer to move with the idols. The program or the festival is called Ratha Jatra. This Ratha Yatra is non-stopped moving. In many countries, the Ratha Yatra is celebrated like India, Bangladesh, Nepal etc. Hindu people show it as a holy event. Hindu people carry a decorated thing like Pahandi bije. In New York, it is also seen.
For the Ratha Yatra, Hindu people expense huge amount and they decorate chariots. From the website of www.rathyatra.org, it is easy to know about the Ratha Yatra. In India, the festival Ratha Yatra celebrates as largely. That is why, many people go there as a tourist. You can know the detailed history related the Ratha Yatra from the Wikipedia and if you want to watch the video, then go to YouTube site.
Many people geather there with the Ratha Yatra and some of them dance and sing. The main program held in Delhi in India. That is why, most population held in Delhi at this time.