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

Other days

tulip

Tulip Day
kiss a ginger

Kiss A Ginger Day
buddy

Buddy Day
one

One Day
youth

Youth Day
stress awareness

Stress Awareness Day
cuddle up

Cuddle Up Day
my little pony

My Little Pony Day
pampering

Pampering Day
ormille

Ormille Day