March hosts 178 national days and holidays on Calendar.cx — the third-highest count of any month. The month opens with National Read Across America Day / Dr. Seuss Day (Mar 2) and builds to International Women's Day (Mar 8), National Pi Day (Mar 14), and the iconic St. Patrick's Day (Mar 17). Gamers celebrate National Mario Day (Mar 10); dog lovers mark National Puppy Day (Mar 23). March also hosts International Whiskey Day (Mar 27) and National Doctors Day (Mar 30). Spring begins in the Northern Hemisphere this month, making March a natural turning point in the calendar year.