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

Other days

pumpkin

Pumpkin Day
nail polish

Nail Polish Day
me

Me Day
chocolate milkshake

Chocolate Milkshake Day
boba

Boba Day
african immigrant and refugee hiv and hep awareness

African Immigrant And Refugee Hiv And Hep Awareness Day
ruby

Ruby Day
self appreciation

Self Appreciation Day
bounce

Bounce Day
bow tie

Bow Tie Day