hide died in 1998 so doesn't 2010 mean it's the 12 anniversary since his death? I refer to "The stage was set to the 13th death anniversary of guitarist HIDE". 13 was also used in an article I read in regards to the memorial services being planned in Tokyo this year at Honganji. Is my maths that bad?
Or, is this the Japanese style of counting? I mean, the number of months of pregnancy is counted differently to the West.
There are 2 ways of counting in Japan.
Japanese counts numbers, ages, and other things with the same way as yours generally.
But Japanese sometimes uses the other way, the way we count ages/years one more than the usual counting.
I often hear the way used related to the Buddhism memorial services after one's death in Japan.
And there are some important memorial years after one's death related to Buddhism.
(I don't know whether Buddhism in other countries has this memorial thing.)
The important memorial years are a little different on each area, or each Buddhism denomination in Japan,
but I think 3rd, 7th, 13th are very famous and common for Japanese Buddhists.
So, as Hide died on 1998, 2010 is the 13th anniversary year which is important in Japan.
And about hide memorial summit on 2008, they said it was on 10th anniversary year.
We count the years with the general way in this case,
because hide memorial summit had nothing to do with Buddhism.
By the way, I think it's nice that X members can attend the 13th memorial services for Hide as X members.
Hiroshi said the next will be 23th, but nobody knows whether X will be active at that time.
So it may be the only opportunity for them to attend Hide's important year's memorial services as X members.