Oops, it doesn't look like 'defense explains army day' is a national day..

Other days

african immigrant and refugee hiv and hep awareness

African Immigrant And Refugee Hiv And Hep Awareness Day
pick me

Pick Me Day
bounce

Bounce Day
self care

Self Care Day
lumpy rug

Lumpy Rug Day
boy friend

Boy Friend Day
donate your hair

Donate Your Hair Day
embarrass your best friend

Embarrass Your Best Friend Day
stress awareness

Stress Awareness Day
carpenters

Carpenters Day