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

Other days

nail polish

Nail Polish Day
lost sock memorial

Lost Sock Memorial Day
brow

Brow Day
donate your hair

Donate Your Hair Day
stress awareness

Stress Awareness Day
frozen yogurt

Frozen Yogurt Day
african immigrant and refugee hiv and hep awareness

African Immigrant And Refugee Hiv And Hep Awareness Day
blanket fort

Blanket Fort Day
ask out your crush

Ask Out Your Crush Day
ruby

Ruby Day