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

Other days

aloxolt

Aloxolt Day
ormille

Ormille Day
cuddle up

Cuddle Up Day
boyfriend

Boyfriend Day
tulip

Tulip Day
bow tie

Bow Tie Day
camera

Camera Day
boba

Boba Day
raise awerness of zeus

Raise Awerness Of Zeus Day
slime

Slime Day