Oops, it doesn't look like 'Record Store Record Store day' is a national day..

Other days

book

Book Day
unicorn

Unicorn Day
lumpy rug

Lumpy Rug Day
tulip

Tulip Day
artists

Artists Day
cat girl

Cat Girl Day
lash

Lash Day
ruby

Ruby Day
china

China Day
aloxolt

Aloxolt Day