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

Other days

one

One Day
chocolate milkshake

Chocolate Milkshake Day
stress awareness

Stress Awareness Day
pumpkin

Pumpkin Day
comfy

Comfy Day
special education

Special Education Day
buddy

Buddy Day
ormille

Ormille Day
african immigrant and refugee hiv and hep awareness

African Immigrant And Refugee Hiv And Hep Awareness Day
self care

Self Care Day