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

Other days

fiancee

Fiancee Day
self appreciation

Self Appreciation Day
lumpy rug

Lumpy Rug Day
special education

Special Education Day
cursing

Cursing Day
ormille

Ormille Day
hiv awareness

Hiv Awareness Day
prosecco

Prosecco Day
african immigrant and refugee hiv and hep awareness

African Immigrant And Refugee Hiv And Hep Awareness Day
hot chocolate

Hot Chocolate Day