Oops, it doesn't look like 'assembly may one day' is a national day..

Other days

book

Book Day
artists

Artists Day
first love

First Love Day
hoodie

Hoodie Day
eat what you want

Eat What You Want Day
hiv awareness

Hiv Awareness Day
boba

Boba Day
gum

Gum Day
hannah

Hannah Day
nae nae

Nae Nae Day