Vikramaditya was a legendary king mentioned in ancient Indian literature, featuring in traditional stories including those in Vetala Panchavimshati and Singhasan Battisi. Many describe him as ruler with his capital at Ujjain. "Vikramaditya" was also a common title adopted by several monarchs in ancient and medieval India, and the Vikramaditya legends may be embellished accounts of different kings. According to popular tradition, Vikramaditya began the Vikrama Samvat era in 57 BCE after defeating the Shakas, and those who believe that he is based on a historical figure place him around the first century BCE. However, this era is identified as "Vikrama Samvat" after the ninth century CE.

Ujjain or Ujjayinī is a city in Ujjain district of the Indian state of Madhya Pradesh. It is the fifth-largest city in Madhya Pradesh by population and is the administrative centre of Ujjain district and Ujjain division. It is one of the Hindu pilgrimage centres of Sapta Puri famous for the Kumbh Mela (Simhastha) held there every 12 years. The famous temple of Mahakaleshwar Jyotirlinga is located in the center of the city. The city has been one of the most prominent trade and political centres of the Indian Subcontinent from the time of the ancient Mahājanapadas until the British colonisation of India.