We’ve all heard of national holidays, perhaps even independence day celebrations, depending on the country. Some of us know the dates on the calendar; July 4th in the USA, May 17th in Norway, February 11th in Iran. And even lesser known important dates for countries, like Ohi Day on October 28th in Greece. Of course, there are also days of remembrance, such as November 11th in the US, France, and UK. But what about holidays that only parts of countries celebrate?