Oops, it doesn't look like 'tmnt day' is a national day..

Other days

coffee

Coffee Day
self appreciation

Self Appreciation Day
blanket fort

Blanket Fort Day
kiss a ginger

Kiss A Ginger Day
me

Me Day
hiv awareness

Hiv Awareness Day
boba

Boba Day
bubble bath

Bubble Bath Day
offer

Offer Day
prosecco

Prosecco Day