One other possibility I can think of,
Posted by Joe on 4/19/2017, 10:47 pm, in reply to "Re: The only thing I can think is"
did it depart from you local post office or form somewhere far away? Sometimes when I've had guaranteed shipping it says "out for delivery" from somewhere that's not local and doesn't get there on time. I've only noticed that during holiday season, when I guess they have weird long distance routs to meet demands for guaranteed shipping. Maybe I only notice it during holiday season because that's when demand + weather make them miss their target.