Oops, it doesn't look like 'party will hold its may day' is a national day..

Other days

Cat Girl Day

Slime Day

Chocolate Milkshake Day

Raise Awerness Of Zeus Day

African Immigrant And Refugee Hiv And Hep Awareness Day

Book Day

Boba Day

Emoji Day

Embarrass Your Best Friend Day

Appreciate Yaself A Lil Extra Day