Oops, it doesn't look like 'bat demo day' is a national day..

Other days

boba

Boba Day
girl friend

Girl Friend Day
stress awareness

Stress Awareness Day
believe

Believe Day
self care

Self Care Day
martini

Martini Day
african immigrant and refugee hiv and hep awareness

African Immigrant And Refugee Hiv And Hep Awareness Day
singles

Singles Day
healing

Healing Day
raise awerness of zeus

Raise Awerness Of Zeus Day