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

Other days

buddy

Buddy Day
self appreciation

Self Appreciation Day
stress awareness

Stress Awareness Day
boba

Boba Day
slime

Slime Day
african immigrant and refugee hiv and hep awareness

African Immigrant And Refugee Hiv And Hep Awareness Day
boyfriend

Boyfriend Day
carpenters

Carpenters Day
artists

Artists Day
ponytail

Ponytail Day