Oops, it doesn't look like 'best friends joker day' is a national day..

Other days

china

China Day
nae nae

Nae Nae Day
self appreciation

Self Appreciation Day
hiv awareness

Hiv Awareness Day
fiancee

Fiancee Day
bonang

Bonang Day
my little pony

My Little Pony Day
african immigrant and refugee hiv and hep awareness

African Immigrant And Refugee Hiv And Hep Awareness Day
special education

Special Education Day
me

Me Day