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

Other days

hiv awareness

Hiv Awareness Day
me

Me Day
self appreciation

Self Appreciation Day
lumpy rug

Lumpy Rug Day
donate your hair

Donate Your Hair Day
emoji

Emoji Day
african immigrant and refugee hiv and hep awareness

African Immigrant And Refugee Hiv And Hep Awareness Day
cat girl

Cat Girl Day
fiancee

Fiancee Day
ask out your crush

Ask Out Your Crush Day