Oops, it doesn't look like 'landmarks and spots of hugeness to observe independence day' is a national day..

Other days

Blanket Fort Day

Lost Sock Memorial Day

Camera Day

Gum Day

Tell Ur Crush You Like Them Day

African Immigrant And Refugee Hiv And Hep Awareness Day

Eat What You Want Day

Tell A Fairytale Day

One Day

First Love Day