Oops, it doesn't look like 'maritime museum as they host the day' is a national day..

Other days

unicorn

Unicorn Day
embarrass your best friend

Embarrass Your Best Friend Day
tulip

Tulip Day
african immigrant and refugee hiv and hep awareness

African Immigrant And Refugee Hiv And Hep Awareness Day
blanket fort

Blanket Fort Day
gallery

Gallery Day
bubble bath

Bubble Bath Day
bow tie

Bow Tie Day
pampering

Pampering Day
kiss a brunette

Kiss A Brunette Day