Important things to remember in May:
In the Catholic Church the month of May is dedicated to and honors the Blessed Virgin Mary.
May is the month of Music in New Zealand.
May 3 is Japanese Constitution Day Japan
The first Saturday in May is the date of the annual Kentucky Derby, the most famous horse race in the United States.
The first Saunday in May is Mother´s Day in Spain
The second Sunday in May is Mother's Day in the United States
May 5 is Daniel Marimón birthday
May 5 is when Cinco de Mayo or the Batalla de Puebla is celebrated in Mexico. It is also celebrated widely in the United States.
May 5 is the Children's Day in Japan and KoreaMay 5 is Europe Day in Europe (uncommon usage, largely replaced by May 9)
May 10 is Mother's Day in Mexico, Guatemala, and El Salvador.
May 13 is when the Catholic Church honors the first apparition of Our Lady of Fatima to the three children of Fatima, Portugal – May 13, 1917.
Each year in May, the Eurovision Song Contest is held.
