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

Other days

frozen yogurt

Frozen Yogurt Day
lumpy rug

Lumpy Rug Day
ride the wind

Ride The Wind Day
bow tie

Bow Tie Day
bonang

Bonang Day
first love

First Love Day
martini

Martini Day
kale

Kale Day
slime

Slime Day
artists

Artists Day