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

Other days

pampering

Pampering Day
first love

First Love Day
coffee

Coffee Day
bounce

Bounce Day
hiv awareness

Hiv Awareness Day
gum

Gum Day
blanket fort

Blanket Fort Day
camera

Camera Day
nae nae

Nae Nae Day
ormille

Ormille Day