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

Other days

martini

Martini Day
singles

Singles Day
prosecco

Prosecco Day
promposal

Promposal Day
aloxolt

Aloxolt Day
frozen yogurt

Frozen Yogurt Day
blanket fort

Blanket Fort Day
pick me

Pick Me Day
artists

Artists Day
kiss a ginger

Kiss A Ginger Day