 The duration of Djedkare 's reign is much less certain . Djedkare 's time on the throne is well documented by the Abusir papyri , numerous royal seals and contemporary inscriptions ; taken together , they indicate a fairly long rule for this king . While the Turin canon credits him with 28 years of reign , there is direct evidence for an even longer reign . Several artefacts and inscriptions have been uncovered relating to Djedkare 's rejuvenation or " sed " festival , normally celebrated only after 30 years of reign . For example , the tomb of one of Djedkare 's viziers , Senedjemib Inti , relates construction works undertaken during the year of the 16th cattle count in preparation for the festival ceremonies . An alabaster vase now on display at the Louvre museum bears an inscription celebrating Djedkare 's first sed festival , indicating in all likelihood that he reigned beyond his 30th year on the throne . 
 The duration of Djedkare <a href='null_genetive' title='1'><mark>'s</mark></a>reign <a href='drop_aux' title='2'><mark>is</mark></a>much less certain . Djedkare <a href='null_genetive' title='3'><mark>'s</mark></a>time on the throne is well documented by the Abusir papyri , numerous royal seals and contemporary inscriptions ; taken together , they indicate a fairly long rule for this king . While the Turin canon <a href='uninflect' title='4'><mark>credits</mark></a> him with 28 years of reign , <a href='dey_it' title='5'><mark>there</mark></a> is direct evidence for an even longer reign . Several artefacts and inscriptions <a href='been_done' title='6'><mark>have</mark></a> been uncovered relating to Djedkare <a href='null_genetive' title='7'><mark>'s</mark></a>rejuvenation or " sed " festival , normally celebrated only after 30 years of reign . For example , the tomb of one of Djedkare <a href='null_genetive' title='8'><mark>'s</mark></a>viziers , Senedjemib Inti , <a href='uninflect' title='9'><mark>relates</mark></a> construction works undertaken during the year of the 16th cattle count in preparation for the festival ceremonies . An alabaster vase now on display at the Louvre museum <a href='uninflect' title='10'><mark>bears</mark></a> an inscription celebrating Djedkare <a href='null_genetive' title='11'><mark>'s</mark></a>first sed festival , indicating in all likelihood that he reigned beyond his 30th year on the throne . 
The duration of Djedkare  reign much less certain . Djedkare  time on the throne is well documented by the Abusir papyri , numerous royal seals and contemporary inscriptions ; taken together , they indicate a fairly long rule for this king . While the Turin canon credit him wid 28 years of reign , it is direct evidence for an even longer reign . Several artefacts and inscriptions done been uncovered relating to Djedkare  rejuvenation or " sed " festival , normally celebrated only after 30 yrs of reign . For example , the tomb of one of Djedkare  viziers , Senedjemib Inti , relate construction works undertaken durin da year of the 16th cattle count in preparation for the festival ceremonies . An alabaster vase now on display at the Louvre museum bear an inscription celebrating Djedkare  first sed festival , indicating in all likelihood dat he reigned beyond his 30th year on the throne .