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

Other days

tulip

Tulip Day
artists

Artists Day
pick me

Pick Me Day
self appreciation

Self Appreciation Day
bubble bath

Bubble Bath Day
bonang

Bonang Day
african immigrant and refugee hiv and hep awareness

African Immigrant And Refugee Hiv And Hep Awareness Day
polyamory

Polyamory Day
embarrass your best friend

Embarrass Your Best Friend Day
prosecco

Prosecco Day