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

Other days

aloxolt

Aloxolt Day
african immigrant and refugee hiv and hep awareness

African Immigrant And Refugee Hiv And Hep Awareness Day
china

China Day
stress awareness

Stress Awareness Day
offer

Offer Day
lost sock memorial

Lost Sock Memorial Day
tulip

Tulip Day
believe

Believe Day
bow tie

Bow Tie Day
self appreciation

Self Appreciation Day