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

Other days

my little pony

My Little Pony Day
unicorn

Unicorn Day
fiancee

Fiancee Day
bubble bath

Bubble Bath Day
bounce

Bounce Day
gum

Gum Day
self care

Self Care Day
eat what you want

Eat What You Want Day
lisp

Lisp Day
comfy

Comfy Day