Oops, it doesn't look like 'championships teams have been announced with the day' is a national day..

Other days

Chocolate Milkshake Day

Reading Day

Hiv Awareness Day

Pumpkin Day

One Day

First Love Day

African Immigrant And Refugee Hiv And Hep Awareness Day

Embarrass Your Best Friend Day

Tell Ur Crush You Like Them Day

Fiancee Day