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

Other days

gum

Gum Day
bonang

Bonang Day
frozen yogurt

Frozen Yogurt Day
one

One Day
boba

Boba Day
girl friend

Girl Friend Day
latina equal pay

Latina Equal Pay Day
tulip

Tulip Day
donate your hair

Donate Your Hair Day
lash

Lash Day