Oops, it doesn't look like 'guard members prepare an american flag for salute to service day' is a national day..

Other days

Buddy Day

Tell Ur Crush You Like Them Day

My Little Pony Day

Aloxolt Day

Singles Day

Get Funky Day

Offer Day

African Immigrant And Refugee Hiv And Hep Awareness Day

Lumpy Rug Day

Hiv Awareness Day