The clearest physical evidence for the Sed festival's ritual choreography survives not from any surviving performance but from architecture built to let a king perform it forever. Djoser's Step Pyramid complex at Saqqara, from the early third millennium BCE, includes an entire dedicated Sed festival court lined with dummy chapels representing shrines of Upper and Lower Egyptian deities, structures too small and solid to have been used for daily cult but built specifically so that Djoser's spirit could perform the jubilee's ritual circuit eternally in the afterlife, whether or not he lived to celebrate an actual thirtieth year on the throne. This architectural evidence lets Egyptologists reconstruct much of the ceremony's physical layout even where later textual descriptions are incomplete, and comparable though smaller scale Sed festival structures and relief cycles survive from numerous later kings, including a well documented cycle from the reign of Amenhotep III at Soleb in Nubia.
Because holding a Sed festival, or building monuments implying one, functioned as a public assertion of secure and lasting kingship, several rulers whose thirtieth year never arrived, or whose legitimacy needed reinforcing for other reasons, are recorded celebrating or depicting the festival well ahead of the traditional schedule.