In two years it will be the United States Semiquincentennial. Not as sexy nor as pronounceable as Bicentennial.
The Bicentennial, that was wild. I was a kid and everything was flags and bells. There were sewing patterns for Revolutionary outfits, drums and fifes, wallpaper, cereals. Tours to DC and Philly.
Bicentennial World Book Encyclopedias!
In a few months we choose what 250 years will look like.