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

Other days

offer

Offer Day
stud

Stud Day
one

One Day
nae nae

Nae Nae Day
ride the wind

Ride The Wind Day
mean girls

Mean Girls Day
nail polish

Nail Polish Day
aloxolt

Aloxolt Day
pumpkin

Pumpkin Day
china

China Day