Oops, it doesn't look like 'capital remains swallowed by dark grey clouds and more showers are likely during the day' is a national day..

Other days

Fiancee Day

Buddy Day

Stud Day

Nae Nae Day

African Immigrant And Refugee Hiv And Hep Awareness Day

Kiss A Brunette Day

Cursing Day

Gallery Day

Blanket Fort Day

China Day