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

Other days

my little pony

My Little Pony Day
bounce

Bounce Day
tell a fairytale

Tell A Fairytale Day
first love

First Love Day
kiss a ginger

Kiss A Ginger Day
pumpkin

Pumpkin Day
coffee

Coffee Day
carpenters

Carpenters Day
hannah

Hannah Day
gum

Gum Day