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

Other days

prosecco

Prosecco Day
lumpy rug

Lumpy Rug Day
blanket fort

Blanket Fort Day
cat girl

Cat Girl Day
kiss a ginger

Kiss A Ginger Day
gum

Gum Day
bow tie

Bow Tie Day
hiv awareness

Hiv Awareness Day
get funky

Get Funky Day
lash

Lash Day