The debating season closely follows the academic year in Northern Hemisphere English speaking countries. The first competitions are in Britain and Ireland in October & November, traditionally commenced by the Edinburgh Cup in the first week of October building up to World Championships held over the Christmas holidays. After "Worlds" the Cambridge and Oxford IVs are considered the most prestigious. In the New Year the Trinity IV in Dublin, the premier tournament in Ireland, recommences the season. The season continues with a large number of IONA and European competitions in March and April. During May and June, the period annual examinations in many universities a small number of open competitions are held in preparation for the European Championship. "Euros" was initially held over the Easter break, but is now held over the summer, normally in August and concludes the European debating season.