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

Other days

carpenters

Carpenters Day
boba

Boba Day
martini

Martini Day
boy friend

Boy Friend Day
bow tie

Bow Tie Day
singles

Singles Day
cursing

Cursing Day
prosecco

Prosecco Day
hannah

Hannah Day
chocolate milkshake

Chocolate Milkshake Day