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

Other days

law

Law Day
ponytail

Ponytail Day
latina equal pay

Latina Equal Pay Day
gum

Gum Day
cuddle up

Cuddle Up Day
aloxolt

Aloxolt Day
boy friend

Boy Friend Day
tulip

Tulip Day
bubble bath

Bubble Bath Day
ormille

Ormille Day