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

Other days

lash

Lash Day
african immigrant and refugee hiv and hep awareness

African Immigrant And Refugee Hiv And Hep Awareness Day
boba

Boba Day
nae nae

Nae Nae Day
camera

Camera Day
my little pony

My Little Pony Day
first love

First Love Day
bow tie

Bow Tie Day
stress awareness

Stress Awareness Day
unicorn

Unicorn Day