昼夜 ちゅうや逆転 ぎゃくてんではありませんでした
chūyagyakutendewārimasendeshita

Noun
Desu Copula

The polite, past negative form of 昼夜逆転

1. Was not a reversal of day and night.; Was not a circadian rhythm disruption.

Past/Perfective
Negative
Polite
Formal Register