やなみょうごにちじゃありませんでした
やな明後日じゃありませんでした
yana myō gonichijārimasendeshita

Noun
Desu Copula

The polite, past negative form of やなあさって

1. It wasn't a good day after tomorrow.; It wasn't the day after tomorrow.

Past/Perfective
Negative
Polite
Terminal Form
Usually Written in Kana