Oops, it doesn't look like 'bard whose works are still so relevant to this day' is a national day..

Other days

Ask Out Your Crush Day

Tell Ur Crush You Like Them Day

Ruby Day

Special Education Day

Ponytail Day

Aloxolt Day

African Immigrant And Refugee Hiv And Hep Awareness Day

Fiancee Day

Gum Day

Donate Your Hair Day