Is there a bank holiday on the seventh of June in Ireland?

Yes. The seventh of June is a bank holiday in Ireland because it is the feast of Corpus Christi. Corpus Christi is a Christian holiday that celebrates the body and blood of Jesus Christ. The holiday is observed on the Thursday after Trinity Sunday, which is the Sunday after Pentecost. In Ireland, Corpus Christi is a public holiday, and most businesses and schools are closed.