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

Other days

cursing

Cursing Day
singles

Singles Day
hiv awareness

Hiv Awareness Day
polyamory

Polyamory Day
unicorn

Unicorn Day
reading

Reading Day
lumpy rug

Lumpy Rug Day
bow tie

Bow Tie Day
boy friend

Boy Friend Day
coffee

Coffee Day