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

Other days

kale

Kale Day
carpenters

Carpenters Day
my little pony

My Little Pony Day
prosecco

Prosecco Day
bounce

Bounce Day
coffee

Coffee Day
nail polish

Nail Polish Day
lumpy rug

Lumpy Rug Day
bubble bath

Bubble Bath Day
promposal

Promposal Day