Oops, it doesn't look like 'borders at may day' is a national day..

Other days

book

Book Day
cursing

Cursing Day
aloxolt

Aloxolt Day
kiss a brunette

Kiss A Brunette Day
boyfriend

Boyfriend Day
ruby

Ruby Day
slime

Slime Day
boy friend

Boy Friend Day
kiss a ginger

Kiss A Ginger Day
fiancee

Fiancee Day