Ramdev pir Mandir is located in Sardar Nagar Hansol Ahmedabad.Ramdev is considered to be an incarnation of Vishnu. King Ajmal (Ajaishinh) married Queen Minaldevi, daughter of Pamji Bhati of Chhahan Baru village. The childless king went to Dwaraka and pleaded with Krishna about his wish to have child like him. They had two sons, Viramdev and the younger Ramdev. Ramdev was born on Bhadarva Shukla Dooj in V.S. 1409 at Ramderiya, Undu and Kashmir in Barmer district. Ramdevji was a Tanwar.
Ramdev Pir Jayanti, the birth date of Ramdev, is celebrated every year in India by his devotees. It falls on Dooj (the second day) of Shukla paksha of Bhadrapadmonth of Hindu calendar. In Rajasthan, this day is observed as a public holiday and a fair is held at the Ramdevra temple, where hundreds of thousands of devotees, both Hindu and Muslim, take part and pay their homage to Samadhi at the main temple.