Oops, it doesn't look like 'handshake face slap day' is a national day..

Other days

african immigrant and refugee hiv and hep awareness

African Immigrant And Refugee Hiv And Hep Awareness Day
prescription drug take back

Prescription Drug Take Back Day
bonang

Bonang Day
promposal

Promposal Day
kale

Kale Day
hiv awareness

Hiv Awareness Day
carpenters

Carpenters Day
cuddle up

Cuddle Up Day
gum

Gum Day
pick me

Pick Me Day