Let's suppose that it takes 48 hours to arrive
When it's 2 PM in NYC it would be noon in Denver
So....it would arrive at noon in Denver if it takes 48 hours
But...it only takes 45 hours =
24 hours + 21 hrs =
noon + 21 hours =
noon + 12 + 9 hours =
midnight + 9 hours = 9 AM
