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

Other days

hannah

Hannah Day
eat what you want

Eat What You Want Day
boba

Boba Day
china

China Day
bounce

Bounce Day
nail polish

Nail Polish Day
bonang

Bonang Day
buddy

Buddy Day
prosecco

Prosecco Day
tulip

Tulip Day