Oops, it doesn't look like 'guard on duty in washington dc for inauguration day' is a national day..

Other days

ruby

Ruby Day
cursing

Cursing Day
me

Me Day
self appreciation

Self Appreciation Day
fiancee

Fiancee Day
blanket fort

Blanket Fort Day
hiv awareness

Hiv Awareness Day
nail polish

Nail Polish Day
boba

Boba Day
kiss a brunette

Kiss A Brunette Day