Oops, it doesn't look like 'employer drug test day' is a national day..

Other days

china

China Day
carpenters

Carpenters Day
stud

Stud Day
chocolate milkshake

Chocolate Milkshake Day
singles

Singles Day
youth

Youth Day
ruby

Ruby Day
ormille

Ormille Day
unicorn

Unicorn Day
camera

Camera Day