Oops, it doesn't look like 'council hill day' is a national day..

Other days

bow tie

Bow Tie Day
tulip

Tulip Day
mean girls

Mean Girls Day
self care

Self Care Day
lumpy rug

Lumpy Rug Day
get funky

Get Funky Day
artists

Artists Day
lisp

Lisp Day
youth

Youth Day
pick me

Pick Me Day