Oops, it doesn't look like 'girlfriend homemade pie day' is a national day..

Other days

bow tie

Bow Tie Day
bounce

Bounce Day
blanket fort

Blanket Fort Day
boy friend

Boy Friend Day
reading

Reading Day
believe

Believe Day
lost sock memorial

Lost Sock Memorial Day
first love

First Love Day
african immigrant and refugee hiv and hep awareness

African Immigrant And Refugee Hiv And Hep Awareness Day
frozen yogurt

Frozen Yogurt Day