Seti II must have died in late IV Akhet or early I Peret—after the 70-day mummification period—since a graffito located above KV14, Twosret's tomb, records his burial on III Peret 11. Therefore, the IV Akhet 22 burial date likely records the burial of Siptah himself. Siptah's death would have occurred sometime around II Akhet 12. Siptah himself would have ruled Egypt for approximately 5 years and 10 months since his predecessor, Seti II, died around the end of IV Akhet and the beginning of I Peret, even if he did not legally assume the throne until the start of II Akhet with the aid of the powerful court official Bay.