Oops, it doesn't look like 'letter of intent on the first day' is a national day..

Other days

frozen yogurt

Frozen Yogurt Day
hannah

Hannah Day
brow

Brow Day
youth

Youth Day
hiv awareness

Hiv Awareness Day
ask out your crush

Ask Out Your Crush Day
bow tie

Bow Tie Day
polyamory

Polyamory Day
african immigrant and refugee hiv and hep awareness

African Immigrant And Refugee Hiv And Hep Awareness Day
boba

Boba Day