Oops, it doesn't look like 'Slow Down Go Handy day' is a national day..

Other days

african immigrant and refugee hiv and hep awareness

African Immigrant And Refugee Hiv And Hep Awareness Day
polyamory

Polyamory Day
raise awerness of zeus

Raise Awerness Of Zeus Day
stress awareness

Stress Awareness Day
bow tie

Bow Tie Day
tell a fairytale

Tell A Fairytale Day
blanket fort

Blanket Fort Day
bonang

Bonang Day
emoji

Emoji Day
believe

Believe Day