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

Other days

tulip

Tulip Day
law

Law Day
hannah

Hannah Day
pick me

Pick Me Day
healing

Healing Day
first love

First Love Day
kiss a ginger

Kiss A Ginger Day
ormille

Ormille Day
my little pony

My Little Pony Day
offer

Offer Day