Whether they are a good organization or not, I can't really tell you... but definitely not all people who belong to the ACLU are anti-Christian, and definitely they have done some good, mixed in there with some less good things... just like anyone. We do good things and bad things, and hopefully the good wins out.
According to the United States Postal Service, priority mail takes 1 to 3 days to arrive at its destination. The length of time varies due to the distance based on the shipping point and the receiving point.
USPS does not offer a guaranteed overnight service. Priority Mail Express may be 1-day or 2-day service, depending on destination; the earlier deadline always applies. For example, my neighborhood PO closes at 5:30 p.m., which is also the time of the last pick-up for the collection box outside the door.