Oops, it doesn't look like 'clean up the world day' is a national day..

Other days

african immigrant and refugee hiv and hep awareness

African Immigrant And Refugee Hiv And Hep Awareness Day
china

China Day
tell a fairytale

Tell A Fairytale Day
frozen yogurt

Frozen Yogurt Day
bow tie

Bow Tie Day
boy friend

Boy Friend Day
stress awareness

Stress Awareness Day
latina equal pay

Latina Equal Pay Day
first love

First Love Day
believe

Believe Day