ノー残業 ざんぎょうデーではありませんでした
nōzangyōdēdewārimasendeshita

Noun
Desu Copula

The polite, past negative form of ノー残業デー

1. Was not No-Overtime Day.; It wasn't No-Overtime Day.

Past/Perfective
Negative
Polite
Formal Register