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

Other days

cursing

Cursing Day
bubble bath

Bubble Bath Day
eat what you want

Eat What You Want Day
self appreciation

Self Appreciation Day
boba

Boba Day
law

Law Day
singles

Singles Day
cat girl

Cat Girl Day
girl friend

Girl Friend Day
comfy

Comfy Day