Oops, it doesn't look like 'grid says there could be a gas deficit in britain by the end of the day' is a national day..

Other days

Nae Nae Day

Ormille Day

Cat Girl Day

African Immigrant And Refugee Hiv And Hep Awareness Day

Slime Day

Bounce Day

Martini Day

Emoji Day

Hot Chocolate Day

Hiv Awareness Day