Oops, it doesn't look like 'condition worst day' is a national day..

Other days

coffee

Coffee Day
bounce

Bounce Day
unicorn

Unicorn Day
hot chocolate

Hot Chocolate Day
tulip

Tulip Day
ruby

Ruby Day
slime

Slime Day
kiss a ginger

Kiss A Ginger Day
cuddle up

Cuddle Up Day
polyamory

Polyamory Day