March holidays and observances cover fun foods, educational activities, health awareness, environment causes, and more. March is the awareness month of dissociative identity disorder, colorectal cancer, and multiple sclerosis to name a few. Some March national holidays are National Grammar Day, National Dentist’s Day, and National Pi Day. March celebrations also include Holi, St. Patrick’s Day, and International Women’s Day. Plus, Passover, Easter, and Ramadan are often holidays in March. Here are all the special March holidays and observances you can celebrate, from silly to serious and everything in between.