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

Other days

tulip

Tulip Day
kiss a ginger

Kiss A Ginger Day
carpenters

Carpenters Day
pampering

Pampering Day
reading

Reading Day
ride the wind

Ride The Wind Day
boba

Boba Day
prosecco

Prosecco Day
fiancee

Fiancee Day
bow tie

Bow Tie Day