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

Other days

mean girls

Mean Girls Day
lash

Lash Day
ask out your crush

Ask Out Your Crush Day
prosecco

Prosecco Day
tulip

Tulip Day
ormille

Ormille Day
azonto is acceptable

Azonto Is Acceptable Day
boy friend

Boy Friend Day
buddy

Buddy Day
boba

Boba Day