The Question and Answer section for Night is a great resource to ask questions, find answers, and discuss the novel.
They had to move in the dark. It was bitterly cold and the prisoners had to march with no rest.
Moche is Elie's teacher. He works in the synagogue and is well liked in the community. Moche is one of the first deportees because he's a foreigner in Hungary, thus he was one of the first to be deported to the camps. Moche not only escapes, but...
I don't see evidence that it is mostly at night time. The selections at the beginning would have been in the day time.