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

Other days

bow tie

Bow Tie Day
cuddle up

Cuddle Up Day
self care

Self Care Day
one

One Day
nae nae

Nae Nae Day
lost sock memorial

Lost Sock Memorial Day
brow

Brow Day
coffee

Coffee Day
gum

Gum Day
kiss a ginger

Kiss A Ginger Day