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

Other days

boba

Boba Day
ride the wind

Ride The Wind Day
ruby

Ruby Day
chocolate milkshake

Chocolate Milkshake Day
martini

Martini Day
bow tie

Bow Tie Day
girl friend

Girl Friend Day
prosecco

Prosecco Day
polyamory

Polyamory Day
lisp

Lisp Day