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

Other days

fiancee

Fiancee Day
hannah

Hannah Day
polyamory

Polyamory Day
ask out your crush

Ask Out Your Crush Day
self appreciation

Self Appreciation Day
ormille

Ormille Day
raise awerness of zeus

Raise Awerness Of Zeus Day
ponytail

Ponytail Day
blanket fort

Blanket Fort Day
gum

Gum Day