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

Other days

pick me

Pick Me Day
boy friend

Boy Friend Day
bow tie

Bow Tie Day
african immigrant and refugee hiv and hep awareness

African Immigrant And Refugee Hiv And Hep Awareness Day
promposal

Promposal Day
ride the wind

Ride The Wind Day
bonang

Bonang Day
hiv awareness

Hiv Awareness Day
ask out your crush

Ask Out Your Crush Day
first love

First Love Day