yeardays

Noun

yearday (plural yeardays)

1. (historical, rare) Synonym of anniversary, a day occurring in a yearly cycle.
   • The Second Advent of Christ to remove to heaven his waiting people takes place at the end of the yearday sixth vial in accordance with his personal announcement, […]1887, Michael Baxter, Forty coming wonders

   Synonyms:

   anniversary

   1. (historical, nonstandard, rare) Synonym of birthday, the anniversary of one's birth.
      • Today was her grandchild's yearday. Every year on the day the Little was born, the Littles celebrated their yearday. Henna Rose wanted to prepare a special evening meal and celebration for Knotten tonight. Knotten was ten yeardays today.2020, Pamela L. Volpert, The Tribes of the Littles, page 31
   2. (historical, nonstandard, rare) An annual day; the anniversary of an event or occasion.
      • To wit, on certain year-days he would tarry alone in his tower, and his lamp might be seen gleaming till midnight.2020, Georg Ebers, The Historical Romances of Georg Ebers
   3. (historical, rare) Synonym of deathday or (Christianity) year's mind, the anniversary of a person's death, particularly as observed with a requiem mass or other commemoration.
      • His executors were to keep his yearday for twenty years at the cost of 20s. per year, and finally after his wife's death the bailiffs and commonalty of Southwold were to find a priest for sixteen years next following to sing for his soul […]1907, William Page, The Victoria history of the county of Suffolk, volume 1, page 660
2. A particular day numbered from the first day in the year, without regard to month divisions.
   • To avoid the idiosyncracies^([sic]) of leap years, we propose, as a first approximation to the actual yearday, a standardized yearday s that is a function of (m, d) only, s = S(m) +dl (6) where 5 is a function of m only.1985, Mathematics magazine, volume 58