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

Other days

bow tie

Bow Tie Day
one

One Day
stress awareness

Stress Awareness Day
promposal

Promposal Day
ruby

Ruby Day
self appreciation

Self Appreciation Day
polyamory

Polyamory Day
believe

Believe Day
tell a fairytale

Tell A Fairytale Day
kale

Kale Day