Oops, it doesn't look like 'wwii museum hosts memorial day' is a national day..

Other days

stress awareness

Stress Awareness Day
eat what you want

Eat What You Want Day
aloxolt

Aloxolt Day
african immigrant and refugee hiv and hep awareness

African Immigrant And Refugee Hiv And Hep Awareness Day
ride the wind

Ride The Wind Day
first love

First Love Day
promposal

Promposal Day
prosecco

Prosecco Day
ask out your crush

Ask Out Your Crush Day
singles

Singles Day