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

Other days

ask out your crush

Ask Out Your Crush Day
fiancee

Fiancee Day
gum

Gum Day
stud

Stud Day
bounce

Bounce Day
hiv awareness

Hiv Awareness Day
artists

Artists Day
get funky

Get Funky Day
boyfriend

Boyfriend Day
promposal

Promposal Day