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

Other days

kale

Kale Day
girl friend

Girl Friend Day
frozen yogurt

Frozen Yogurt Day
self care

Self Care Day
slime

Slime Day
tulip

Tulip Day
first love

First Love Day
pick me

Pick Me Day
believe

Believe Day
hot chocolate

Hot Chocolate Day