Oops, it doesn't look like 'poetry month and people challenge themselves to write poems for each day' is a national day..

Other days

Blanket Fort Day

Aloxolt Day

Lumpy Rug Day

Brow Day

Girl Friend Day

My Little Pony Day

Kale Day

Self Appreciation Day

African Immigrant And Refugee Hiv And Hep Awareness Day

Kiss A Brunette Day