五十 ごじゅう にち しゅくではありませんでした
gojūnichino shukudewārimasendeshita

Noun
Desu Copula

The polite, past negative form of 五十日の祝

1. It was not the fiftieth-day celebration.; It wasn't the fiftieth-day festival.

Past/Perfective
Negative
Polite
Formal Register