It is unclear when Yax Nuun Ayiin I died. Stela 31's text indicates that his burial took place in 404, though the text from another sculpture known as the Hombre de Tikal suggests that he may have still been alive in November 406. On the other hand, the K'atun ceremony of May 406, which would ordinarily be presided over by the ruler, is recorded as having been presided over by an otherwise unknown individual called Sihyaj Chan K'inich. This suggests that there may have been an interregnum, possibly with Sihyaj Chan K'inich governing temporarily as a regent, before Sihyaj Chan K'awiil II was enthroned in November 411.