Oops, it doesn't look like 'forfeit the cyhawk game day' is a national day..

Other days

martini

Martini Day
carpenters

Carpenters Day
comfy

Comfy Day
gum

Gum Day
my little pony

My Little Pony Day
artists

Artists Day
bow tie

Bow Tie Day
singles

Singles Day
get funky

Get Funky Day
boba

Boba Day