前年 ぜんねん同月 どうげつじゃなかったです
zennen dōgetsujanakattadesu

Noun
Desu Copula

The polite, past negative form of 前年同月

1. Wasn't the same month two years ago.; Wasn't in the same month the year before last.

Past/Perfective
Negative
Polite
Casual Register