Oops, it doesn't look like 'cemetery ceremony on memorial day' is a national day..

Other days

lost sock memorial

Lost Sock Memorial Day
ask out your crush

Ask Out Your Crush Day
lisp

Lisp Day
cuddle up

Cuddle Up Day
african immigrant and refugee hiv and hep awareness

African Immigrant And Refugee Hiv And Hep Awareness Day
raise awerness of zeus

Raise Awerness Of Zeus Day
self care

Self Care Day
mean girls

Mean Girls Day
promposal

Promposal Day
me

Me Day