Oops, it doesn't look like 'guard toured the beaches of normandy for a day' is a national day..

Other days

african immigrant and refugee hiv and hep awareness

African Immigrant And Refugee Hiv And Hep Awareness Day
comfy

Comfy Day
eat what you want

Eat What You Want Day
one

One Day
tell ur crush you like them

Tell Ur Crush You Like Them Day
kiss a ginger

Kiss A Ginger Day
promposal

Promposal Day
self appreciation

Self Appreciation Day
lost sock memorial

Lost Sock Memorial Day
emoji

Emoji Day