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

Other days

ask out your crush

Ask Out Your Crush Day
hiv awareness

Hiv Awareness Day
african immigrant and refugee hiv and hep awareness

African Immigrant And Refugee Hiv And Hep Awareness Day
pumpkin

Pumpkin Day
nae nae

Nae Nae Day
my little pony

My Little Pony Day
youth

Youth Day
raise awerness of zeus

Raise Awerness Of Zeus Day
bow tie

Bow Tie Day
slime

Slime Day