Oops, it doesn't look like 'best friend things cause my day' is a national day..

Other days

bubble bath

Bubble Bath Day

tulip

Tulip Day

slime

Slime Day

Emoji Day

pumpkin

Pumpkin Day

carpenters

Carpenters Day

self care

Self Care Day

african immigrant and refugee hiv and hep awareness

African Immigrant And Refugee Hiv And Hep Awareness Day

artists

Artists Day

cuddle up

Cuddle Up Day