This day

...is a date that haunts - obviously.  Having been there when it happened and then the aftermath is something that will never be forgotten.  It's a bitter memory; a foul taste. 

It was also my parents' wedding anniversary - it marred my father's memory of their marriage for the rest of his life.  He held it sacred after my mother died and this was a different wound.

It doesn't matter what "number anniversary" this is; how many years.

It will never be forgotten nor forgiven.