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

Other days

bounce

Bounce Day
self care

Self Care Day
girl friend

Girl Friend Day
brow

Brow Day
get funky

Get Funky Day
kiss a brunette

Kiss A Brunette Day
latina equal pay

Latina Equal Pay Day
martini

Martini Day
book

Book Day
cuddle up

Cuddle Up Day