day vs night

i have noticed a strong importance in the difference between the night and the day in this book. the things that happen during the day time are very different that the things that happen at night. the book uses the sunlight to show events that are socially acceptable and the darkness shows events that need to happen under cover. the daylight can expose others to things. the punishment that hester recives is for her to wear her scarlet letter on her clothes at all times. but the only time that she actually gets publicly shamed is durring the day. everyone can see hester and her scarlett letter. the night lets things happen that not everyone knows about. for example when hester pearl and dimsdale are all out on the scaffold together. this could have never happened innocently if it was in daylight.