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

Other days

self appreciation

Self Appreciation Day
youth

Youth Day
one

One Day
pumpkin

Pumpkin Day
singles

Singles Day
boy friend

Boy Friend Day
offer

Offer Day
promposal

Promposal Day
frozen yogurt

Frozen Yogurt Day
nae nae

Nae Nae Day