Whit Monday
In 1939, the Oireachtas passed the Holidays (Employees) Act 1939 which designated the public holidays as Christmas Day; St. Stephen's Day; St. Patrick's Day; Easter Monday; Whit Monday and the first Monday in August. The Holidays (Employees) Act 1973 replaced the Whit Monday holiday with the first Monday in June. New Year's Day was not listed in the Act but was added by Statutory Instrument in 1974. The October Holiday was added in 1977. The first Monday in May (commonly known as May Day) was added in 1993 and first observed in 1994.