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

Other days

hoodie

Hoodie Day
lumpy rug

Lumpy Rug Day
pumpkin

Pumpkin Day
girl friend

Girl Friend Day
self appreciation

Self Appreciation Day
boba

Boba Day
ormille

Ormille Day
ruby

Ruby Day
cursing

Cursing Day
blanket fort

Blanket Fort Day