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

Other days

kale

Kale Day
boyfriend

Boyfriend Day
stress awareness

Stress Awareness Day
african immigrant and refugee hiv and hep awareness

African Immigrant And Refugee Hiv And Hep Awareness Day
nail polish

Nail Polish Day
me

Me Day
aloxolt

Aloxolt Day
singles

Singles Day
self care

Self Care Day
prescription drug take back

Prescription Drug Take Back Day