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

Other days

donate your hair

Donate Your Hair Day
get funky

Get Funky Day
gum

Gum Day
hoodie

Hoodie Day
hiv awareness

Hiv Awareness Day
one

One Day
aloxolt

Aloxolt Day
coffee

Coffee Day
nail polish

Nail Polish Day
comfy

Comfy Day