Oops, it doesn't look like 'hereford open day' is a national day..

Other days

artists

Artists Day
youth

Youth Day
promposal

Promposal Day
pumpkin

Pumpkin Day
pampering

Pampering Day
cuddle up

Cuddle Up Day
ormille

Ormille Day
lash

Lash Day
boy friend

Boy Friend Day
stud

Stud Day