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

Other days

african immigrant and refugee hiv and hep awareness

African Immigrant And Refugee Hiv And Hep Awareness Day
cat girl

Cat Girl Day
raise awerness of zeus

Raise Awerness Of Zeus Day
hot chocolate

Hot Chocolate Day
azonto is acceptable

Azonto Is Acceptable Day
youth

Youth Day
ruby

Ruby Day
law

Law Day
stress awareness

Stress Awareness Day
tell a fairytale

Tell A Fairytale Day