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

Other days

lash

Lash Day
bonang

Bonang Day
tulip

Tulip Day
kiss a ginger

Kiss A Ginger Day
boyfriend

Boyfriend Day
blanket fort

Blanket Fort Day
promposal

Promposal Day
one

One Day
coffee

Coffee Day
ask out your crush

Ask Out Your Crush Day