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

Other days

ruby

Ruby Day
law

Law Day
bonang

Bonang Day
tell ur crush you like them

Tell Ur Crush You Like Them Day
hot chocolate

Hot Chocolate Day
china

China Day
stud

Stud Day
martini

Martini Day
mean girls

Mean Girls Day
one

One Day