Oops, it doesn't look like 'lock down on day' is a national day..

Other days

ponytail

Ponytail Day
cat girl

Cat Girl Day
frozen yogurt

Frozen Yogurt Day
promposal

Promposal Day
law

Law Day
boba

Boba Day
ruby

Ruby Day
ride the wind

Ride The Wind Day
bow tie

Bow Tie Day
reading

Reading Day