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

Other days

book

Book Day
boy friend

Boy Friend Day
carpenters

Carpenters Day
gum

Gum Day
tulip

Tulip Day
boba

Boba Day
buddy

Buddy Day
kiss a ginger

Kiss A Ginger Day
artists

Artists Day
lumpy rug

Lumpy Rug Day