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

Other days

believe

Believe Day
prosecco

Prosecco Day
blanket fort

Blanket Fort Day
youth

Youth Day
tulip

Tulip Day
ride the wind

Ride The Wind Day
martini

Martini Day
singles

Singles Day
promposal

Promposal Day
chocolate milkshake

Chocolate Milkshake Day