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

Other days

pampering

Pampering Day
cat girl

Cat Girl Day
self appreciation

Self Appreciation Day
gum

Gum Day
bow tie

Bow Tie Day
blanket fort

Blanket Fort Day
fiancee

Fiancee Day
self care

Self Care Day
nae nae

Nae Nae Day
latina equal pay

Latina Equal Pay Day