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

Other days

tell a fairytale

Tell A Fairytale Day
nail polish

Nail Polish Day
kale

Kale Day
ruby

Ruby Day
get funky

Get Funky Day
bounce

Bounce Day
cursing

Cursing Day
stud

Stud Day
lisp

Lisp Day
boba

Boba Day