People like to celebrate on days that are important to them. People often have a party on their birthday. There are other days throughout the year on which people celebrate. Some of these are called feast days. Feast days often commemorate a famous person's life or an important historical event.
For example, Christmas Day is a feast day on which the birth of Christ is celebrated.
On feast days, people have a break from their normal routine and themselves. The term Red Letter Day is sometimes used to describe a feast day. This is because in old calendars, ordinary days appeared in black, but feast days were marked in red so that people could see them clearly and look forward to them.
A festival is major event usually organised by a local community, village, town, city or country. Festivals often have a theme. In Ireland, the main festivals themes are music, sport, food, theatre and dance. Certain festivals are organised around religious feast day. St Patrick's Day is 17th March and festivals now take place for several days around this date. Different events are held throughout the country, leading up to the parades and celebrations on St Patrick's Day.