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

Other days

artists

Artists Day

aloxolt

Aloxolt Day

ask out your crush

Ask Out Your Crush Day

lumpy rug

Lumpy Rug Day

cursing

Cursing Day

stress awareness

Stress Awareness Day

unicorn

Unicorn Day

Emoji Day

pumpkin

Pumpkin Day

african immigrant and refugee hiv and hep awareness

African Immigrant And Refugee Hiv And Hep Awareness Day