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

Other days

stress awareness

Stress Awareness Day
pampering

Pampering Day
tulip

Tulip Day
slime

Slime Day
eat what you want

Eat What You Want Day
african immigrant and refugee hiv and hep awareness

African Immigrant And Refugee Hiv And Hep Awareness Day
self care

Self Care Day
bow tie

Bow Tie Day
lumpy rug

Lumpy Rug Day
promposal

Promposal Day