Oops, it doesn't look like 'emergency on april fools day' is a national day..

Other days

carpenters

Carpenters Day
my little pony

My Little Pony Day
ruby

Ruby Day
african immigrant and refugee hiv and hep awareness

African Immigrant And Refugee Hiv And Hep Awareness Day
kale

Kale Day
hoodie

Hoodie Day
hot chocolate

Hot Chocolate Day
nae nae

Nae Nae Day
tell a fairytale

Tell A Fairytale Day
bow tie

Bow Tie Day