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

Other days

youth

Youth Day
promposal

Promposal Day
donate your hair

Donate Your Hair Day
kale

Kale Day
lisp

Lisp Day
first love

First Love Day
cuddle up

Cuddle Up Day
nail polish

Nail Polish Day
one

One Day
martini

Martini Day