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

Other days

fiancee

Fiancee Day
gum

Gum Day
get funky

Get Funky Day
blanket fort

Blanket Fort Day
prosecco

Prosecco Day
carpenters

Carpenters Day
cuddle up

Cuddle Up Day
hiv awareness

Hiv Awareness Day
nae nae

Nae Nae Day
hannah

Hannah Day