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

Other days

kale

Kale Day
mean girls

Mean Girls Day
promposal

Promposal Day
boy friend

Boy Friend Day
donate your hair

Donate Your Hair Day
ask out your crush

Ask Out Your Crush Day
african immigrant and refugee hiv and hep awareness

African Immigrant And Refugee Hiv And Hep Awareness Day
stress awareness

Stress Awareness Day
prescription drug take back

Prescription Drug Take Back Day
my little pony

My Little Pony Day