Oops, it doesn't look like 'team on a game day' is a national day..

Other days

china

China Day
cat girl

Cat Girl Day
cuddle up

Cuddle Up Day
eat what you want

Eat What You Want Day
nail polish

Nail Polish Day
comfy

Comfy Day
brow

Brow Day
reading

Reading Day
lash

Lash Day
boyfriend

Boyfriend Day