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

Other days

cat girl

Cat Girl Day
buddy

Buddy Day
ormille

Ormille Day
artists

Artists Day
nae nae

Nae Nae Day
special education

Special Education Day
nail polish

Nail Polish Day
comfy

Comfy Day
slime

Slime Day
brow

Brow Day