決けっ算さん日び

noun

settlement day; day of reckoning

Primarily an accounting term for the date on which accounts are settled, but can be used figuratively for a moment of judgment or final accounting.

• 当とう社しゃの決けっ算さん日びは3月がつ31日にちです。

  Our company's settlement day is March 31st.

• その失しっ敗ぱいは彼かれにとってまさに決けっ算さん日びだった。

  That failure was truly a day of reckoning for him.