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

Other days

kale

Kale Day
martini

Martini Day
youth

Youth Day
my little pony

My Little Pony Day
buddy

Buddy Day
lash

Lash Day
latina equal pay

Latina Equal Pay Day
self care

Self Care Day
boba

Boba Day
bubble bath

Bubble Bath Day