Oops, it doesn't look like 'happiness happens happiness happens day' is a national day..

Other days

boba

Boba Day
ruby

Ruby Day
donate your hair

Donate Your Hair Day
youth

Youth Day
african immigrant and refugee hiv and hep awareness

African Immigrant And Refugee Hiv And Hep Awareness Day
self care

Self Care Day
fiancee

Fiancee Day
raise awerness of zeus

Raise Awerness Of Zeus Day
bubble bath

Bubble Bath Day
brow

Brow Day