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

Other days

tulip

Tulip Day
boba

Boba Day
gum

Gum Day
donate your hair

Donate Your Hair Day
nae nae

Nae Nae Day
youth

Youth Day
one

One Day
healing

Healing Day
brow

Brow Day
eat what you want

Eat What You Want Day