Death of Osho (Indian mystic and philosopher) on January 19, 1990, marks the passing of Osho, whose birth name was Rajneesh Chandra Mohan Jain. Osho was a prominent figure in contemporary Indian spirituality, known for his teachings on meditation, personal freedom, and critical perspectives on social and religious traditions. His lectures and numerous books attracted a wide international following during the 1970s and 1980s. Osho established a spiritual movement that gained adherents across many countries. His main centers of activity were initially in Pune, India, and later in Oregon, USA. During the 1980s, the movement faced significant legal and social challenges in the United States, as well as internal disputes. After returning to India, Osho continued his spiritual and educational activities until his death. Osho’s death on January 19, 1990, marked the end of the life of one of the most controversial and influential spiritual figures of the twentieth century. It is estimated that his teachings have influenced millions worldwide. After his passing, followers commemorate this date each year with gatherings and memorial events at various spiritual centers. This event was included in the Iranian Gregorian calendar because of its historical and cultural significance.