Would there be as many murders?

This is just a random discussion question I was wondering about, and wanted to get others opinions. I have been watching the I.D Channel lately, and noticed that most murders and robberies happen at night. Because the killer can’t be spotted easily, and the victim is most vunerable. Even though it isn’t possible, if it was daylight all the time, do you think there would be as many murders as there are at the moment?