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

Other days

comfy

Comfy Day
ruby

Ruby Day
promposal

Promposal Day
offer

Offer Day
china

China Day
latina equal pay

Latina Equal Pay Day
ride the wind

Ride The Wind Day
my little pony

My Little Pony Day
pampering

Pampering Day
cuddle up

Cuddle Up Day