deathday

plural deathdays

1. The day of a person's death, especially when viewed as being appointed by fate.

   The placing of the dragon is inevitable: a man can but die upon his death-day.

   1936, J. R. R. Tolkien, Beowulf: The Monsters and the Critics, Norwood, Pa.: Norwood Editions, published 1976, page 32

2. The anniversary of a death, the date upon which someone died in a bygone year.

   "Is it her deathday?" I asked. "Nope," he said.

   1996, Patrick O'Leary, Door Number Three, →ISBN, page 362

   3 more examples

   ‘Well, this Hallowe’en will be my five hundredth deathday,’ said Nearly Headless Nick, drawing himself up and looking dignified.

   1998 July 2, J. K. Rowling [pseudonym; Joanne Rowling], “The Deathday Party”, in Harry Potter and the Chamber of Secrets (Harry Potter; 2), London: Bloomsbury Publishing, →ISBN

   It only just dawned on me that intrinsically it felt better to honor her on her birthday rather than her deathday. It has always struck me as odd that more people remember the day Elvis or John Lennon died than the dates they were born.

   2009, Duchess Dale, How May I Love You Today?, →ISBN, page 199

   […] just then we needed a tenth man and needed him badly, because one of us had a deathday to observe and wanted to say the mourner's prayer.

   2011, Sholem Aleichem, Tevye the Dairyman and The Railroad Stories