Oops, it doesn't look like 'ironic sweater day' is a national day..

Other days

china

China Day

chocolate milkshake

Chocolate Milkshake Day

nail polish

Nail Polish Day

reading

Reading Day

hannah

Hannah Day

mean girls

Mean Girls Day

healing

Healing Day

stress awareness

Stress Awareness Day

artists

Artists Day

african immigrant and refugee hiv and hep awareness

African Immigrant And Refugee Hiv And Hep Awareness Day