Oops, it doesn't look like 'FriendshipGirlfriendSisterAnd Best Friend day' is a national day..

Other days

Ask Out Your Crush Day

Frozen Yogurt Day

Tell Ur Crush You Like Them Day

Promposal Day

Pampering Day

Boba Day

Ponytail Day

Kale Day

Pumpkin Day

Kiss A Ginger Day