Oops, it doesn't look like 'humanitarian works day' is a national day..

Other days

boba

Boba Day
tell a fairytale

Tell A Fairytale Day
brow

Brow Day
gum

Gum Day
african immigrant and refugee hiv and hep awareness

African Immigrant And Refugee Hiv And Hep Awareness Day
camera

Camera Day
unicorn

Unicorn Day
self appreciation

Self Appreciation Day
cursing

Cursing Day
hiv awareness

Hiv Awareness Day