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

Other days

boy friend

Boy Friend Day
emoji

Emoji Day
ruby

Ruby Day
bow tie

Bow Tie Day
offer

Offer Day
chocolate milkshake

Chocolate Milkshake Day
stress awareness

Stress Awareness Day
cuddle up

Cuddle Up Day
brow

Brow Day
buddy

Buddy Day