Oops, it doesn't look like 'disasters trending on same day' is a national day..

Other days

first love

First Love Day
ruby

Ruby Day
gum

Gum Day
ormille

Ormille Day
hiv awareness

Hiv Awareness Day
nail polish

Nail Polish Day
stress awareness

Stress Awareness Day
african immigrant and refugee hiv and hep awareness

African Immigrant And Refugee Hiv And Hep Awareness Day
lost sock memorial

Lost Sock Memorial Day
eat what you want

Eat What You Want Day