Oops, it doesn't look like 'weather service has issued an excessive heat warning for orange county starting day' is a national day..

Other days

Ride The Wind Day

Gum Day

African Immigrant And Refugee Hiv And Hep Awareness Day

Lumpy Rug Day

Gallery Day

My Little Pony Day

First Love Day

Me Day

Frozen Yogurt Day

Pampering Day