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

Other days

carpenters

Carpenters Day
martini

Martini Day
ruby

Ruby Day
ask out your crush

Ask Out Your Crush Day
nail polish

Nail Polish Day
unicorn

Unicorn Day
kale

Kale Day
one

One Day
first love

First Love Day
ride the wind

Ride The Wind Day