Oops, it doesn't look like 'compliment beer can day' is a national day..

Other days

boy friend

Boy Friend Day
coffee

Coffee Day
kale

Kale Day
believe

Believe Day
bow tie

Bow Tie Day
bonang

Bonang Day
lash

Lash Day
china

China Day
stud

Stud Day
lumpy rug

Lumpy Rug Day