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

Other days

nae nae

Nae Nae Day

appreciate yaself a lil extra

Appreciate Yaself A Lil Extra Day

hiv awareness

Hiv Awareness Day

pampering

Pampering Day

african immigrant and refugee hiv and hep awareness

African Immigrant And Refugee Hiv And Hep Awareness Day

Emoji Day

ride the wind

Ride The Wind Day

bounce

Bounce Day

bow tie

Bow Tie Day

unicorn

Unicorn Day