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

Other days

bow tie

Bow Tie Day
youth

Youth Day
cat girl

Cat Girl Day
cuddle up

Cuddle Up Day
polyamory

Polyamory Day
camera

Camera Day
hoodie

Hoodie Day
frozen yogurt

Frozen Yogurt Day
self appreciation

Self Appreciation Day
promposal

Promposal Day