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

Other days

azonto is acceptable

Azonto Is Acceptable Day

lisp

Lisp Day

bonang

Bonang Day

Me Day

coffee

Coffee Day

lash

Lash Day

healing

Healing Day

self care

Self Care Day

donate your hair

Donate Your Hair Day

lost sock memorial

Lost Sock Memorial Day