Oops, it doesn't look like 'my parents should have swallowed sibling day' is a national day..

Other days

ruby

Ruby Day
cuddle up

Cuddle Up Day
hot chocolate

Hot Chocolate Day
boy friend

Boy Friend Day
offer

Offer Day
chocolate milkshake

Chocolate Milkshake Day
azonto is acceptable

Azonto Is Acceptable Day
pampering

Pampering Day
stud

Stud Day
embarrass your best friend

Embarrass Your Best Friend Day