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

Other days

fiancee

Fiancee Day
blanket fort

Blanket Fort Day
coffee

Coffee Day
lumpy rug

Lumpy Rug Day
boba

Boba Day
hoodie

Hoodie Day
one

One Day
carpenters

Carpenters Day
bow tie

Bow Tie Day
special education

Special Education Day