Oops, it doesn't look like 'league north and at the bottom meant this was arguably the biggest day' is a national day..

Other days

Pumpkin Day

Tulip Day

Bonang Day

Boy Friend Day

Tell A Fairytale Day

Tell Ur Crush You Like Them Day

Chocolate Milkshake Day

Raise Awerness Of Zeus Day

China Day

My Little Pony Day