Ujjain Simhastha is a Hindu religious mela held every 12 years in the Ujjain city of Madhya Pradesh, India. The name is also transliterated as Sinhastha or Singhastha. In Hindi, the fair is also called Simhasth or Sinhasth (due to schwa deletion). The name derives from the fact that it is held when the Jupiter is in Leo (Simha in Hindu astrology).