Oops, it doesn't look like 'rugby league day' is a national day..

Other days

prosecco

Prosecco Day
tell ur crush you like them

Tell Ur Crush You Like Them Day
bow tie

Bow Tie Day
tulip

Tulip Day
one

One Day
self care

Self Care Day
martini

Martini Day
reading

Reading Day
cursing

Cursing Day
stud

Stud Day