Oops, it doesn't look like 'championship game in one day' is a national day..

Other days

prosecco

Prosecco Day
self appreciation

Self Appreciation Day
tulip

Tulip Day
first love

First Love Day
raise awerness of zeus

Raise Awerness Of Zeus Day
self care

Self Care Day
appreciate yaself a lil extra

Appreciate Yaself A Lil Extra Day
bonang

Bonang Day
kiss a brunette

Kiss A Brunette Day
singles

Singles Day