Beltein is held on May 1. Celtic celebration of the beginning of summer. This event in the first decade of the month may is annual.
Historic start of the new year on March 25 (Lady Day) in England, Wales, Ireland, and the future United States until the adoption of the Gregorian calendar in 1752. (The year 1751 began on 25 March; the year 1752 began on 1 January.) It is one of the four Quarter days in Ireland and England;
June Holiday in Ireland on June 7 (celebrated on the first Monday in June);
Bloomsday on June 16 (Dublin, Ireland);
Father's Day on June 20 (Ñelebrated on the third Sunday of June øò Argentina, Aruba, Canada, Costa Rica, France, Greece, Hong Kong, Hungary, India, Ireland, Kenya, Japan, Macao, Malaysia, Malta, Mexico, Netherlands, Pakistan, Peru, Puerto Rico, Singapore, Slovakia, South Africa, Sri Lanka, Trinidad and Tobago, Turkey, Venezuela, United Kingdom);
World Microbiome Day on June 27 (was launched by the APC Microbiome Ireland. Microbiomes are communities of bacteria, fungi and virus that are found everywhere, from inside our bodies to soil and water);
National Day of Commemoration in Ireland on July 11 (It occurs on the Sunday nearest July 11, the anniversary of the date in 1921 that a truce was signed ending the Irish War of Independence);