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

Other days

martini

Martini Day
slime

Slime Day
boyfriend

Boyfriend Day
ruby

Ruby Day
self care

Self Care Day
aloxolt

Aloxolt Day
boba

Boba Day
boy friend

Boy Friend Day
kiss a ginger

Kiss A Ginger Day
get funky

Get Funky Day