Oops, it doesn't look like 'follow john on twitter day' is a national day..

Other days

buddy

Buddy Day
bow tie

Bow Tie Day
lisp

Lisp Day
boba

Boba Day
carpenters

Carpenters Day
self appreciation

Self Appreciation Day
ponytail

Ponytail Day
african immigrant and refugee hiv and hep awareness

African Immigrant And Refugee Hiv And Hep Awareness Day
hiv awareness

Hiv Awareness Day
martini

Martini Day