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

Other days

martini

Martini Day
cuddle up

Cuddle Up Day
ponytail

Ponytail Day
hoodie

Hoodie Day
prosecco

Prosecco Day
offer

Offer Day
ormille

Ormille Day
ruby

Ruby Day
my little pony

My Little Pony Day
pampering

Pampering Day