Oops, it doesn't look like 'hurricane center expect the storm to strengthen into a hurricane over the next day' is a national day..

Other days

Comfy Day

African Immigrant And Refugee Hiv And Hep Awareness Day

Gum Day

Lumpy Rug Day

Bounce Day

Tell Ur Crush You Like Them Day

Pumpkin Day

Lost Sock Memorial Day

Aloxolt Day

Ride The Wind Day