Neither Snow Nor Rain Norr Heat Nor Gloom of Night

Yesterday I mailed some DVDs back to Netflix. I received email notice this morning at 7:07 am that they'd been received. Less than 24 hours from the time the DVDs were picked up from my mailbox to the time they were delivered and scanned in to Netflix's system.

How did they do that?

It usually takes a minimum of two days for an item sent by me to be delivered to my Dad in Pittsburgh, the same location of the Netflix depot.

And when did the USPS start delivering before 8:00 am???