While I cannot say I'm perfect, I try very hard to be accurate. If the mailbox is numbered (which I'm not sure in other areas of the country, but here in Maine it seems optional) I am highly accurate. When I say I'm under eval, I'm not referring to day after a holiday or christmas period or mondays. What I was told when I was hired is that the evaluated time is over the course of a week, so on monday they expect you to be over the evaluated time, and under it the rest of the week and come out at the end of the week on average.