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

Other days

carpenters

Carpenters Day
hannah

Hannah Day
frozen yogurt

Frozen Yogurt Day
tulip

Tulip Day
hoodie

Hoodie Day
kiss a ginger

Kiss A Ginger Day
girl friend

Girl Friend Day
comfy

Comfy Day
mean girls

Mean Girls Day
boy friend

Boy Friend Day