Grebeg Suro Ponorogo in Ponorogo
Grebeg Suro, organized by Ponorogo's regency government since 1987 out of an older warok vigil tradition, marks 1 Suro, the Javanese New Year coinciding with 1 Muharram. The month-long celebration includes the Festival Reog Nasional mask-dance competition, a historical procession, a heirloom procession, and Larungan Risalah Doa, a prayer-offering ritual at Telaga Ngebel lake, all following the shifting Islamic lunar calendar.
Ponorogo's regency government has organized Grebeg Suro since 1987, when officials formalized an older warok community vigil tradition, tirakatan, expanding it into a broader civic and cultural celebration marking 1 Suro, the Javanese New Year that coincides with 1 Muharram on the Islamic calendar.