Oops, it doesn't look like 'average income per day' is a national day..

Other days

kale

Kale Day
nae nae

Nae Nae Day
unicorn

Unicorn Day
azonto is acceptable

Azonto Is Acceptable Day
tell a fairytale

Tell A Fairytale Day
african immigrant and refugee hiv and hep awareness

African Immigrant And Refugee Hiv And Hep Awareness Day
camera

Camera Day
china

China Day
eat what you want

Eat What You Want Day
healing

Healing Day