(n) year in which an imperial memorial ceremony is held (the 3rd, 5th, 10th 20th, 50th & 100th years after death and every 100 years thereafter)
(n) imperial memorial ceremony (held on the anniversary of the emperor's or empress's death, on fixed years)
(n) construction of a new shrine and transfer of the enshrined object from the old to the new, occurring at a regular, preordained time
(n) fixed-interval transfer ceremony (wherein a shrine's sacred object is transferred to a newly constructed main hall)
