Oops, it doesn't look like 'block and delete numbers day' is a national day..

Other days

Unicorn Day

Law Day

Comfy Day

Stress Awareness Day

Chocolate Milkshake Day

My Little Pony Day

Lost Sock Memorial Day

Donate Your Hair Day

African Immigrant And Refugee Hiv And Hep Awareness Day

Appreciate Yaself A Lil Extra Day