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

Other days

boy friend

Boy Friend Day
reading

Reading Day
donate your hair

Donate Your Hair Day
hoodie

Hoodie Day
blanket fort

Blanket Fort Day
artists

Artists Day
fiancee

Fiancee Day
pumpkin

Pumpkin Day
bubble bath

Bubble Bath Day
believe

Believe Day