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

Other days

aloxolt

Aloxolt Day
singles

Singles Day
believe

Believe Day
african immigrant and refugee hiv and hep awareness

African Immigrant And Refugee Hiv And Hep Awareness Day
coffee

Coffee Day
boy friend

Boy Friend Day
brow

Brow Day
cursing

Cursing Day
girl friend

Girl Friend Day
bow tie

Bow Tie Day