The earliest possible date for the diary's last entry is said to be April 14, 953; however, as this is a date one year and a half prior to the death Imperial Prince Shigeakira (the Imperial Prince passed away on October 18, 954), the possibility that which he did not make any entries in his diary during this period may be significantly low (Morosuke FUJIWARA, who was a court noble contemporary with Imperial Prince and also his farther-in-law, made entries in his diary until two days before his death).
日記終了の下限とされる天暦7年2月23日は、親王薨去の1年6ヶ月前（親王は天暦8年9月14日に薨去）であるため、その間の日記が存在しなかったとは考えがたい（同時代の公卿で親王の舅でもある藤原師輔は、薨去2日前まで日記を筆録している。）