Christ's Ascension is held on May 21. Or Kristi Himmelfartsdag in Norway. This event in the third decade of the month may is annual.
St. Yves of Kermartensky Day in Brittany, France on May 19 (Ivo Helori or Ivo Bretonsky was born on October 17, 1253, died May 19, 1303. In the Roman Catholic Church, he is considered a saint, and is traditionally considered the patron saint of lawyers, notaries and lawyers);
Game Festival in France on May 26 (designed to promote cooperative and non-violent games);
Slavery Abolition Day on May 27 (Guadeloupe, Saint Barthélemy, Saint Martin);
National Resistance Day in France on May 27 (on the occasion of the anniversary of the first meeting of the National Council of Resistance);
Mother's Day in France on May 31 (also Algeria, Dominican Republic. First Sunday of June, if Pentecost occurs on this day, Haiti, Mauritius, Morocco, Sweden, Tunisia; celebrated on the last Sunday in May)