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

Other days

promposal

Promposal Day
african immigrant and refugee hiv and hep awareness

African Immigrant And Refugee Hiv And Hep Awareness Day
one

One Day
hiv awareness

Hiv Awareness Day
coffee

Coffee Day
latina equal pay

Latina Equal Pay Day
boba

Boba Day
prosecco

Prosecco Day
ruby

Ruby Day
azonto is acceptable

Azonto Is Acceptable Day