St David, the patron saint of Wales is celebrated on the 1 March.
To mark the day, Welsh people around the world wear one or both of the Welsh national emblems - a daffodil and a leek. Special concerts and parades are also held in St David's honour.
Patron saints are chosen to be special protectors over all areas of life. England, Ireland and Scotland all have their own patron saint to whom they dedicate a day.