Oops, it doesn't look like 'exhibition opens for its first day' is a national day..

Other days

African Immigrant And Refugee Hiv And Hep Awareness Day

Promposal Day

Appreciate Yaself A Lil Extra Day

Lost Sock Memorial Day

Comfy Day

Cuddle Up Day

Gallery Day

Tell A Fairytale Day

Mean Girls Day

Pumpkin Day