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

Other days

Unicorn Day

Youth Day

My Little Pony Day

African Immigrant And Refugee Hiv And Hep Awareness Day

Self Care Day

Appreciate Yaself A Lil Extra Day

Chocolate Milkshake Day

Lisp Day

Nae Nae Day

Get Funky Day