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

Other days

boba

Boba Day
lash

Lash Day
buddy

Buddy Day
my little pony

My Little Pony Day
ormille

Ormille Day
pick me

Pick Me Day
bow tie

Bow Tie Day
self care

Self Care Day
martini

Martini Day
donate your hair

Donate Your Hair Day