Editing May (section)

===Movable civic===
==== Last Friday in April to the first Sunday in May ====
* [[Arbor Day|National Arbour Week]] ([[Ontario]], Canada)

==== First Thursday ====
* [[Arbor Day|Arbour Day]] ([[Nova Scotia]], Canada)
* [[National Day of Prayer]] ([[United States]])
* [[National Day of Reason]] (United States)

==== First Saturday ====
* [[Kentucky Derby]]
* [[Free Comic Book Day]]
* [[Green Up Day]] ([[Vermont]], United States)
* [[World Naked Gardening Day]]

===== First Sunday =====
* [[Mother's Day]] ([[Angola]], [[Cape Verde]], [[Hungary]], [[Lithuania]], [[Mozambique]], [[Portugal]], [[Spain]])
* [[World Laughter Day]]
* [[Children's Day]] (South Korea)

==== First full week ====
* [[Teachers' Day|National Teacher Appreciation Week]] ([[United States]])
* [[North American Occupational Safety and Health Week]]

===== Tuesday of First full week =====
* [[Teachers' Day|National Teacher Appreciation Day]] ([[United States]])

===== Wednesday of first full week =====
* [[Occupational Safety and Health Professional Day]]

==== Second week in May ====
* [[National Stuttering Awareness Week]] ([[United States]])

==== First Tuesday ====
* [[World Asthma Day]]

==== Friday preceding Second Sunday in May ====
* [[Military Spouse Day]] ([[United States]])
* [[National Public Gardens Day]] (United States)

==== Saturday closest to May 10 ====
* [[National Train Day]] ([[United States]])

==== Second Saturday ====
* [[International Migratory Bird Day]] (Canada, the United States, Mexico, Central and South America, and the Caribbean)
* [[Arbor Day|National Tree Planting Day]] (Mongolia)
* National Train Day

==== Second Weekend ====
* [[National Mills Day|National Mills Weekend]] ([[United Kingdom]])
* [[World Migratory Bird Day]]

==== Second Sunday ====
* [[American Health Care Association|National Nursing Home Week]] (United States)
* [[Children's Day]] (Spain)
* [[Father's Day]] (Romania)
* [[Mother's Day]] ([[Anguilla]], Aruba, Australia, Austria, Bahamas, Barbados, Bangladesh, Belgium, Belize, Bermuda, [[Bonaire]], Brazil, Brunei, Canada, Chile, Colombia, Cuba, Croatia, [[Curaçao]], Czech Republic, Denmark, Ecuador, Estonia, Finland, Germany, Greece, Grenada, Honduras, [[Hong Kong]], Iceland, India, Italy, Jamaica, Japan, Latvia, Malta, Malaysia, the Netherlands, New Zealand, Pakistan, Peru, Philippines, Puerto Rico, Singapore, Slovakia, South Africa, Suriname, Switzerland, Taiwan, Trinidad and Tobago, Turkey, United States, Uruguay, Venezuela, Zimbabwe)
* [[Public holidays in Belarus|State Flag and State Emblem Day]] (Belarus)
* [[World Fair Trade Day]]

==== Week of [[May 12]] ====
* [[International Nurses Day|National Nursing Week]] (United States)

==== Third Weekend, including Friday ====
* [[Sanja Matsuri]] ([[Tokyo]], Japan)

==== Third Friday ====
* [[Arbor Day|Arbour Day]] ([[Prince Edward Island]], Canada)
* [[National Defense Transportation Day]]
* [[Endangered species|Endangered Species]] Day (United States)<ref>{{cite web|url=http://www.fws.gov/midwest/endangered/esday/|title=U.S. Fish and Wildlife Service – Endangered Species Day|author=U.S. Fish and Wildlife Service|work=fws.gov|access-date=2015-05-15|archive-date=2015-05-09|archive-url=https://web.archive.org/web/20150509114742/http://www.fws.gov/midwest/endangered/esday/|url-status=dead}}</ref>
* [[List of food days#May|National Pizza Party Day (United States)]]<ref>{{cite web|url=http://nationaldaycalendar.com/national-pizza-party-day-third-friday-in-may/|title=NATIONAL PIZZA PARTY DAY – Third Friday in May|work=[[National Day Calendar]]|date=4 February 2024|access-date=15 May 2015|archive-date=18 May 2015|archive-url=https://web.archive.org/web/20150518092044/http://nationaldaycalendar.com/national-pizza-party-day-third-friday-in-may/|url-status=live}}</ref>

==== Third Saturday ====
* The [[Preakness Stakes]] is run, second jewel in the triple crown of horse racing.
* [[Armed Forces Day (United States)]]
* [[Culture Freedom Day]]
* [[Sanja Matsuri]]
* [[World Whisky Day]]

==== Third Sunday ====
* [[Commemoration Day of Fallen Soldiers]]
* [[Father's Day]] ([[Tonga]])
* [[Madonna dell'Udienza|Feast of Our Lady of the Audience]]
* [[Sanja Matsuri]] ([[Tokyo]], Japan)

==== Monday on or before May 24 ====
* [[Victoria Day (Scotland)]]

==== Third Monday ====
* [[Discovery Day]] ([[Cayman Islands]])

==== Monday on or before May 25 ====
* [[National Patriots' Day]] ([[Quebec]])

==== Last Monday preceding May 25 ====
* [[Victoria Day]] ([[Canada]])

==== May 24, or the nearest weekday if May 24 falls on a weekend ====
* [[Bermuda Day]] (Bermuda)

==== Saturday closest to May 30 ====
* [[Armed Forces Day]] (Spain)

==== Last Weekend ====
* [[Kyiv Day]] ([[Kyiv]])

==== Last Sunday ====
* [[Arbor Day]] (Venezuela)
* [[Children's Day]] (Hungary)
* [[Mother's Day]] (Algeria, Dominican Republic, Haiti, Mauritius, Morocco, Sweden, Tunisia)
* [[Turkmen Carpet Day]] (Turkmenistan)

==== Last Monday ====
* [[Heroes' Day]] (Turks and Caicos Islands)
* [[Memorial Day]] (United States), a public holiday, is on [[May 30]], but observed on the last Monday in May.
* [[Ratu Sir Lala Sukuna Day]] (Fiji), removed as a national holiday in 2010.

==== Last Wednesday ====
* [[Multiple Sclerosis International Federation|World Multiple Sclerosis Day]]

==== Last Thursday ====
* [[Take a Girl Child to Work Day]] (South Africa)