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

Other days

kale

Kale Day
gallery

Gallery Day
blanket fort

Blanket Fort Day
ruby

Ruby Day
nail polish

Nail Polish Day
camera

Camera Day
kiss a brunette

Kiss A Brunette Day
gum

Gum Day
self care

Self Care Day
nae nae

Nae Nae Day