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

Other days

brow

Brow Day
bow tie

Bow Tie Day
stud

Stud Day
china

China Day
singles

Singles Day
carpenters

Carpenters Day
azonto is acceptable

Azonto Is Acceptable Day
tell a fairytale

Tell A Fairytale Day
bonang

Bonang Day
gum

Gum Day