Oops, it doesn't look like 'ugly christmas sweater ugly christmas sweater day' is a national day..

Other days

stress awareness

Stress Awareness Day

pick me

Pick Me Day

stud

Stud Day

appreciate yaself a lil extra

Appreciate Yaself A Lil Extra Day

ormille

Ormille Day

african immigrant and refugee hiv and hep awareness

African Immigrant And Refugee Hiv And Hep Awareness Day

unicorn

Unicorn Day

get funky

Get Funky Day

Me Day

singles

Singles Day