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

Other days

pumpkin

Pumpkin Day

nail polish

Nail Polish Day

Emoji Day

ormille

Ormille Day

african immigrant and refugee hiv and hep awareness

African Immigrant And Refugee Hiv And Hep Awareness Day

artists

Artists Day

stress awareness

Stress Awareness Day

ask out your crush

Ask Out Your Crush Day

buddy

Buddy Day

azonto is acceptable

Azonto Is Acceptable Day