Much of what is known about the Sed festival's specific ceremonial content comes from relief carvings and dedicated festival structures rather than from a single surviving textual description of the rite in full, most famously the Step Pyramid complex of King Djoser at Saqqara, whose dummy buildings and courtyards are widely interpreted by Egyptologists as a stone recreation of the festival's temporary ceremonial architecture, built to serve the king's renewal ritually forever in the afterlife once the mudbrick and wooden structures of the living festival had been dismantled. Not every king reached or celebrated a first jubilee at the conventional thirty year mark, since many ancient Egyptian reigns were considerably shorter, but some rulers who did reach that milestone celebrated the festival with particular lavishness, and the heretic king Akhenaten's early Sed festival, celebrated well before the traditional thirty year threshold and repurposed to promote his controversial religious reforms centred on the Aten, stands as a notable and much studied exception to the festival's usual conservative, tradition affirming character, showing that even a rite this old and formulaic could be redirected to serve a ruler's particular political and theological programme.