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

Other days

chocolate milkshake

Chocolate Milkshake Day
bow tie

Bow Tie Day
artists

Artists Day
promposal

Promposal Day
me

Me Day
prosecco

Prosecco Day
my little pony

My Little Pony Day
ask out your crush

Ask Out Your Crush Day
lumpy rug

Lumpy Rug Day
african immigrant and refugee hiv and hep awareness

African Immigrant And Refugee Hiv And Hep Awareness Day