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

Other days

eat what you want

Eat What You Want Day
bubble bath

Bubble Bath Day
latina equal pay

Latina Equal Pay Day
boba

Boba Day
offer

Offer Day
ruby

Ruby Day
kale

Kale Day
cursing

Cursing Day
mean girls

Mean Girls Day
believe

Believe Day