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

Other days

martini

Martini Day
bubble bath

Bubble Bath Day
tulip

Tulip Day
one

One Day
mean girls

Mean Girls Day
stress awareness

Stress Awareness Day
lumpy rug

Lumpy Rug Day
book

Book Day
hiv awareness

Hiv Awareness Day
boba

Boba Day