Oops, it doesn't look like 'flag as a handkerchief several times during the yoga day' is a national day..

Other days

Ponytail Day

African Immigrant And Refugee Hiv And Hep Awareness Day

Me Day

Bow Tie Day

Hiv Awareness Day

Gallery Day

Boy Friend Day

Hot Chocolate Day

Azonto Is Acceptable Day

My Little Pony Day