Oops, it doesn't look like 'centre ahead of day' is a national day..

Other days

bonang

Bonang Day
prosecco

Prosecco Day
lumpy rug

Lumpy Rug Day
cat girl

Cat Girl Day
hoodie

Hoodie Day
get funky

Get Funky Day
cuddle up

Cuddle Up Day
bow tie

Bow Tie Day
law

Law Day
book

Book Day