Has it been 4018 days already?
From Apple Press Release on June 28, 2007:
CUPERTINO, California—June 28, 2007—Apple’s revolutionary iPhone™ will go on sale this Friday, June 29 at 6:00 p.m. local time at Apple® retail stores nationwide. All 164 Apple retail stores in the US will stay open until midnight, and customers can purchase up to two iPhones on a first come, first served basis.
As of June 29, 2018, there are 272 Apple Stores in the United States alone.
(From Apple’s Store List, retrieved June 29, 2018; and if the author this post can count correctly.)