When is the first day of Autumn 2008 in Europe?
However in Ireland, Autumn begins on the 1st of August. Irish seasons follow the Irish calender which centres seasons on the solstices and equinoxes. So mid-summer falls on the summer solstice and mid-winter on the winter solstice. This calendar is derived from the ancient Celts. So while most of North America observes the beginnig of Autumn on or around the 21st of September, the Autumn is already half over for Irish people.