Oops, it doesn't look like 'cemetery for the memorial day' is a national day..

Other days

pampering

Pampering Day

blanket fort

Blanket Fort Day

cuddle up

Cuddle Up Day

ponytail

Ponytail Day

lost sock memorial

Lost Sock Memorial Day

martini

Martini Day

stress awareness

Stress Awareness Day

lumpy rug

Lumpy Rug Day

Me Day

my little pony

My Little Pony Day