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May is the fifth month of the year in the Julian and
Gregorian calendar The Gregorian calendar is the calendar A calendar is a system of organizing days. This is done by giving names to periods of time, typically days, weeks, months and years. A calendar date, date is the designation of a single, speci ...
s and the third of seven months to have a length of 31 days. May is a month of
spring Spring(s) may refer to: Common uses * Spring (season), a season of the year * Spring (device), a mechanical device that stores energy * Spring (hydrology), a natural source of water * Spring (mathematics), a geometric surface in the shape of a heli ...
in the Northern Hemisphere and
autumn Autumn, also known as fall in American English American English (AmE, AE, AmEng, USEng, en-US), sometimes called United States English or U.S. English, is the set of variety (linguistics), varieties of the English language native to ...

autumn
in the Southern Hemisphere. Therefore, May in the
Southern Hemisphere The Southern Hemisphere is the half (hemisphere Hemisphere may refer to: * A half of a sphere As half of the Earth * A hemispheres of Earth, hemisphere of Earth ** Northern Hemisphere ** Southern Hemisphere ** Eastern Hemisphere ** Western He ...

Southern Hemisphere
is the seasonal equivalent of
November November is the eleventh and penultimate month A month is a unit of time, used with calendars, that is approximately as long as a natural orbital period of the Moon; the words ''month'' and ''Moon'' are cognates. The traditional concept arose ...

November
in the Northern Hemisphere and vice versa. Late May typically marks the start of the summer vacation season in the United States (
Memorial Day Memorial Day (originally known as Decoration Day) is a federal holiday in the United States In the United States, a federal holiday is a calendar date that is recognized and designated by the federal government of the United States as a h ...
) and Canada (
Victoria Day Victoria Day (french: Fête de la Reine, lit=Celebration of the Queen) is a federal Canadian public holiday celebrated on the last Monday preceding May 25. Initially in honour of Queen Victoria Victoria (Alexandrina Victoria; 24 May 1819 ...
) that ends on
Labor Day Labor Day is a federal holiday in the United States In the United States, a federal holiday is a calendar date that is recognized and designated by the federal government of the United States as a holiday. Every year on a U.S. federal holid ...

Labor Day
, the first Monday of September. May (in Latin, ''
Maius ''Maius'' or ''mensis Maius'' (May May is the fifth month of the year in the Julian calendar, Julian and Gregorian calendars and the third of seven months to have a length of 31 days. May is a month of Spring (season), spring in the Northern ...
'') was named for the
Greek god The following is a list of gods A deity or god is a supernatural The supernatural encompasses supposed phenomena or entities that are not subject to the laws of nature. This term is attributed to non-physical entities, such as angel ...
dess
Maia Maia (; Ancient Greek: Μαῖα; la, Maia), in ancient Greek religion, is one of the Pleiades (Greek mythology), Pleiades and the mother of Hermes by Zeus. Maia is the daughter of Atlas (mythology), Atlas and Pleione (mythology), Pleione the ...
, who was identified with the
Roman era In , ancient Rome is civilization from the founding of the Italian city of in the 8th century BC to the collapse of the in the 5th century AD, encompassing the (753 BC–509 BC), (509 BC–27 BC) and (27 BC–476 AD) until the fall of ...
goddess A goddess is a female Female (symbol: ♀) is the sex Sex is either of two divisions, typically male Male (♂) is the sex of an organism that produces the gamete known as sperm. A male gamete can fuse with a larger female gamete, ...

goddess
of fertility,
Bona Dea Bona Dea (; 'Good Goddess') was a goddess A goddess is a female Female (symbol: ♀) is the sex of an organism, or a part of an organism, that produces non-mobile ovum, ova (egg cells). Barring rare medical conditions, most female mammals ...

Bona Dea
, whose
festival A festival is an event ordinarily celebrated by a community and centering on some characteristic aspect of that community and its religion or cultures. It is often marked as a local or national holiday, mela, or Muslim holidays, eid. A festiva ...

festival
was held in May. Conversely, the Roman poet
Ovid Pūblius Ovidius Nāsō (; 20 March 43 BC – 17/18 AD), known in English as Ovid ( ), was a Augustan literature (ancient Rome), Roman poet who lived during the reign of Augustus. He was a contemporary of the older Virgil and Horace, with whom ...

Ovid
provides a second etymology, in which he says that the month of May is named for the ''maiores,'' Latin for "elders," and that the following month (June) is named for the ''iuniores,'' or "young people" (''Fasti VI.88'').
Mayovka In the context of the late Russian Empire, a mayovka ( rus, Маёвка, p=mɐˈjɵfkə) was a picnic in the countryside or in a park in the early days of May. Eventually, "mayovka" came to mean an illegal celebration of May 1 by revolutionary ...
, in the context of the late
Russian Empire The Russian Empire, . commonly referred to as Imperial Russia, was a historical empire that extended across Eurasia and North America from 1721, succeeding the Tsardom of Russia following the Treaty of Nystad that ended the Great Northern War. ...
, was a
picnic A picnic is a meal A meal is an eating Eating (also known as consuming) is the ingestion Ingestion is the consumption of a substance by an organism In biology, an organism (from Ancient Greek, Greek: ὀργανισμός, ' ...

picnic
in the countryside or in a park in the early days of May, hence the name. Eventually, "mayovka" (specifically, "proletarian mayovka") came to mean an illegal celebration of
May 1 Events Pre-1600 * 305 – Diocletian Diocletian (; la, Gaius Aurelius Valerius Diocletianus; born Diocles; 22 December c. 244 – 3 December 311) was from 284 to 305. Born to a family of low status in , Diocletian rose through the ...
by revolutionary public, typically presented as an innocent picnic. Special devotions to the
Virgin Mary According to the gospels Gospel originally meant the Christian message, but in the 2nd century it came to be used also for the books in which the message was set out; in this sense a gospel can be defined as a loose-knit, episodic narrat ...

Virgin Mary
take place in May. See
May devotions to the Blessed Virgin Mary May devotions to the Blessed Virgin Mary refer to special Marian devotions Marian devotions are external pious practices directed to the person of Mary, mother of God, by members of certain Christian traditions. They are performed in Catholi ...
.
Eta Aquariids The Eta Aquariids are a meteor shower A meteor shower is a celestial event in which a number of meteors are observed to radiate, or originate, from one point in the night sky. These meteors are caused by streams of cosmic debris called meteoro ...
meteor shower appears in May. It is visible from about April 21 to about May 20 each year with peak activity on or around May 6. The
Arietids The Arietids are a strong meteor shower that lasts from May 22 to July 2 each year, and peaks on June 7. The Arietids, along with the Zeta Perseids, are the most intense daylight meteor showers of the year. The source of the shower is unknown, but ...

Arietids
shower from May 22 – July 2, and peaks on June 7. The
VirginidsThe Virginids are a meteor shower. There are many major and minor meteor shower streams that occur during the Virginid Complex, including the Alpha Virginids, Gamma Virginids, Eta Virginids, Theta Virginids, Iota Virginids, Lambda Virginids, Mu Virgi ...
also shower at various dates in May.


Ancient Roman observances

Under the calendar of ancient Rome, the festival of
Bona Dea Bona Dea (; 'Good Goddess') was a goddess A goddess is a female Female (symbol: ♀) is the sex of an organism, or a part of an organism, that produces non-mobile ovum, ova (egg cells). Barring rare medical conditions, most female mammals ...

Bona Dea
fell on May 1,
Argei The rituals of the Argei were archaic Religion in ancient Rome, religious observances in ancient Rome that took place on March 16 and March 17, and again on May 14 or May 15. By the time of Augustus, the meaning of these rituals had become obscure ...
fell on May 14 or May 15,
Agonalia An Agonalia or Agonia was an obscure archaic religious observance celebrated in ancient Rome In historiography, ancient Rome is Roman people, Roman civilization from the founding of the Italian city of Rome in the 8th century BC to the coll ...
fell on May 21, and
Ambarvalia upright=1, Ambarvalia sacrifice relief. Ambarvalia was a Roman Roman or Romans usually refers to: *Rome, the capital city of Italy *Ancient Rome, Roman civilization from 8th century BC to 5th century AD *Roman people, the people of ancient Rome * ...
on May 29.
Floralia The Floralia was a festival A festival is an event ordinarily celebrated by a community A community is a social unit (a group of living things) with commonality such as norms, religion Religion is a social system, social-cultural sys ...
was held April 27 during the Republican era, or April 28 on the
Julian calendar The Julian calendar, proposed by Julius Caesar Gaius Julius Caesar (; 12 July 100 BC – 15 March 44 BC) was a Roman Roman or Romans usually refers to: *Rome, the capital city of Italy *Ancient Rome, Roman civilization from 8th century B ...
, and lasted until May 3.
Lemuria (festival) The Lemuralia or Lemuria was a feast in the religion of ancient Rome during which the Romans performed rite A rite is an established, Ceremony, ceremonial, usually religious, act. Rites in this sense fall into three major categories: * rites of ...
fell on 9,11, and 13 May under the Julian calendar. The
College of Aesculapius and HygiaThe College of Aesculapius and Hygia was an association ''(collegium A (plural ), or college, was any association in ancient Rome with a legal personality. Such associations could be civil or religious. The word literally means "society", fr ...
celebrated two festivals of
Rosalia (festival) In the Roman Empire, Rosalia or Rosaria was a festival of roses celebrated on various dates, primarily in May, but scattered through mid-July. The observance is sometimes called a ''rosatio'' ("rose-adornment") or the ''dies rosationis'', "day ...
, one on May 11 and one on May 22. Rosalia was also celebrated at
Pergamon Pergamon or Pergamum ( or ; grc-gre, Πέργαμον), also referred to by its modern Greek form Pergamos (), was a rich and powerful ancient Greek Ancient Greek includes the forms of the used in and the from around 1500 BC to 300 ...

Pergamon
on May 24–26. A military Rosalia festival, Rosaliae signorum, also occurred on May 31. Ludi Fabarici was celebrated on May 29 – June 1.
Mercury Mercury usually refers to: * Mercury (planet) Mercury is the smallest planet in the Solar System and the closest to the Sun. Its orbit around the Sun takes 87.97 Earth days, the shortest of all the Sun's planets. It is named after the Roman g ...
would receive a sacrifice on the Ides of May (May 15). Tubilustrium took place on May 23 as well as in March. These dates do not correspond to the modern
Gregorian calendar The Gregorian calendar is the calendar A calendar is a system of organizing days. This is done by giving names to periods of time, typically days, weeks, months and years. A calendar date, date is the designation of a single, speci ...
.


May symbols

*May's birthstone is the
emerald Emerald is a gemstone A gemstone (also called a fine gem, jewel, precious stone, or semi-precious stone) is a piece of mineral In geology and mineralogy, a mineral or mineral species is, broadly speaking, a solid chemical compound wit ...

emerald
which is emblematic of love and success. *The May birth flowers are the
Lily of the Valley Lily of the valley, ''Convallaria majalis'' (), sometimes written lily-of-the-valley, is a woodland flowering plant The flowering plants, also known as Angiospermae (), or Magnoliophyta (), are the most diverse group of Embryophyte, land plant ...

Lily of the Valley
and the ''
Crataegus monogyna ''Crataegus monogyna'', known as common hawthorn, oneseed hawthorn, or single-seeded hawthorn, is a species of flowering plant Flowering plants include multiple members of the clade Angiospermae (), commonly called angiosperms. The term "an ...

Crataegus monogyna
''. Both are native throughout the cool temperate Northern Hemisphere in Asia, Europe, and in the southern Appalachian Mountains in the United States, but have been naturalized throughout the temperate climatic world. :The "Mayflower" ''
Epigaea repens ''Epigaea repens'', the mayflower or trailing arbutus, is a low, spreading shrub in the family Ericaceae. It is found from Newfoundland to Florida, west to Kentucky Kentucky ( , ), officially the Commonwealth of Kentucky, is a U.S. sta ...

Epigaea repens
'' is a North American harbinger of May, and the floral emblem of both
Nova Scotia ) , image_map = Nova Scotia in Canada 2.svg , Label_map = yes , coordinates = , official_lang = English (''de facto'') , RegionalLang = French, Scots Gaelic , capital ...

Nova Scotia
and
Massachusetts Massachusetts (, ), officially the Commonwealth of Massachusetts, is the most populous state State may refer to: Arts, entertainment, and media Literature * ''State Magazine'', a monthly magazine published by the U.S. Department of State * ...

Massachusetts
. Its native range extends from Newfoundland south to Florida, west to Kentucky in the southern range, and to Northwest Territories in the north. *The
zodiac The zodiac is a belt-shaped region of the sky that extends approximately 8° north or south (as measured in celestial latitude) of the ecliptic The ecliptic is the plane (geometry), plane of Earth's orbit around the Sun. From the perspecti ...

zodiac
signs for the month of May are
Taurus Taurus is Latin for 'bull' and may refer to: * Taurus (constellation), one of the constellations of the zodiac * Taurus (mythology), one of two Greek mythological characters named Taurus * Taurus (astrology), the astrological sign * ''Bos taurus'' ...
(until May 19) and
Gemini Gemini may refer to: Space * Gemini (constellation), one of the constellations of the zodiac ** Gemini in Chinese astronomy * Project Gemini, the second U.S. crewed spaceflight program * Gemini Observatory, consisting of telescopes in the Northern ...
(May 20 onwards).. Signs in UT/GMT for 1950–2030.


May observances


Month-long observances

* Working class history month * Better Hearing and Speech Month * In Catholic tradition, May is the Month of the
Blessed Virgin Mary According to the gospels Gospel originally meant the Christian message ("the gospel"), but in the 2nd century it came to be used also for the books in which the message was set out. In this sense a gospel can be defined as a loose-knit, ...

Blessed Virgin Mary
. See
May devotions to the Blessed Virgin Mary May devotions to the Blessed Virgin Mary refer to special Marian devotions Marian devotions are external pious practices directed to the person of Mary, mother of God, by members of certain Christian traditions. They are performed in Catholi ...
* Celiac Awareness Month *
Cystic Fibrosis Cystic fibrosis (CF) is a genetic disorder A genetic disorder is a health problem caused by one or more abnormalities in the genome. It can be caused by a mutation in a single gene In biology, a gene (from ''genos'' "...Wilhelm Johan ...
Awareness Month. * Ehlers-Danlos Syndrome Awareness month *
Flores de Mayo Flores de Mayo (Spanish language in the Philippines, Spanish for "flowers of May") is a festival held in the Philippines in the month of May. It is one of the May devotions to the Blessed Virgin Mary and lasts for the entire year. The Santacruzan ( ...
(Philippines) * Garden for Wildlife month *
Huntington's Disease Huntington's disease (HD), also known as Huntington's chorea, is a neurodegenerative disease that is mostly Genetic disorder#Autosomal dominant, inherited. The earliest symptoms are often subtle problems with mood or mental abilities. A gener ...
Awareness Month (International) * International Masturbation Month * International Mediterranean Diet Month *
Kaamatan Kaamatan or Pesta Kaamatan is a form of harvest festival celebrated annually in the state of Sabah in Malaysia. It is normally celebrated by the ethnic Kadazan-Dusuns, as well as by other related ethnic groups in the state, and lasts for the wh ...
harvest festival (
Labuan Labuan (; JawiJawi may refer to: People and languages *Australia: **Jawi dialect, a nearly extinct Australian aboriginal language **Jawi people, an Australian Aboriginal people of the Kimberley coast of Western Australia, who speak or spoke ...
,
Sabah Sabah () is a state State may refer to: Arts, entertainment, and media Literature * ''State Magazine'', a monthly magazine published by the U.S. Department of State * The State (newspaper), ''The State'' (newspaper), a daily newspaper in Co ...

Sabah
) * New Zealand Music Month (New Zealand) *
National Pet Month''National Pet Month'' is a celebration of the benefits that pets bring to people's lives - and vice versa. It is observed annually in the United States in May and during the month of April in the United Kingdom. The Campaign Is Coordinated By Natio ...
(United Kingdom) * National Smile Month (United Kingdom) * Season of Emancipation (April 14 to August 23) (Barbados) *
Skin Cancer Skin cancers are cancer Cancer is a group of diseases A disease is a particular abnormal condition that negatively affects the structure or function of all or part of an organism, and that is not due to any immediate external ...

Skin Cancer
Awareness Month * South Asian Heritage Month (International) * World Trade Month


United States

*
Asian Pacific American Heritage Month Asian American and Pacific Islander Heritage Month (, officially changed from Asian/Pacific American Heritage Month) is a period for the duration of month of May May is the fifth month of the year in the Julian calendar, Julian and Gregoria ...
* National
ALS Awareness Month ALS Awareness Month is a campaign to spread awareness of and raise funds for research for a cure for ALS ( amyotrophic lateral sclerosis, also known as Lou Gehrig’s Disease). Canada In Canada, June has been declared as ALS Awareness Month by the ...
* Bicycle Month * National Brain Tumor Awareness Month * National Burger Month * Community Action Awareness Month (
North Dakota North Dakota () is a U.S. state In the , a state is a , of which there are currently 50. Bound together in a , each state holds al jurisdiction over a separate and defined geographic territory where it shares its with the . Due to th ...
) * National Electrical Safety Month * National Foster Care Month * National Golf Month *
Jewish American Heritage Month Jewish American Heritage Month (JAHM) is an annual recognition and celebration of Jewish American, American Jews' achievements and contributions to the United States of America during the month of May. President George W. Bush first proclaimed th ...
* Haitian Heritage Month *
Hepatitis Hepatitis is inflammation Inflammation (from la, inflammatio) is part of the complex biological response of body tissues to harmful stimuli, such as pathogen In biology Biology is the natural science that studies life and living or ...

Hepatitis
Awareness Month *
Mental Health Awareness MonthMental Health Awareness Month (also referred to as "Mental Health Month") has been observed in May in the United States since 1949. The month is observed with media, local events, and film screenings. Mental Health Awareness Month began in the Unite ...
* National Military Appreciation Month * National Moving Month * National
Osteoporosis Osteoporosis is a systemic skeletal disorder characterized by low bone massImage:Bone density scanner.jpg, A scanner used to measure bone density using dual energy X-ray absorptiometry Bone density, or bone mineral density (BMD), is the amount ...
Month * National Stroke Awareness Month * National Water Safety Month * Older Americans Month


Non-Gregorian observances, 2020

''(All Baha'i, Islamic, and Jewish observances begin at the sundown prior to the date listed, and end at sundown of the date in question unless otherwise noted.)'' *
List of observances set by the Bahá'í calendar A ''list'' is any enumeration An enumeration is a complete, ordered listing of all the items in a collection. The term is commonly used in mathematics Mathematics (from Ancient Greek, Greek: ) includes the study of such topics as quantity ( ...
*
List of observances set by the Chinese calendar The traditional Chinese holidays are an essential part of harvests or prayer offerings. The most important Chinese holiday is the Chinese New Year Chinese New Year ( ), Spring Festival or the Lunar New Year, is the festival that celebrates the ...
* List of observances set by the Hebrew calendar *
List of observances set by the Islamic calendar Please note that all Islamic observances begin at the sundown prior to the date listed, and end at sundown of the date in question unless otherwise noted. Holidays for 1441 (2019-2020) {, class="wikitable" !width=20%, Date on Islamic Calendar ! ...
* List of observances set by the Solar Hijri calendar


Movable observances, 2020

* Phi Ta Khon (Dan Sai,
Loei province#REDIRECT Loei province Loei (Thai alphabet, Thai: wikt:เลย, เลย, ), is one of the most sparsely populated Provinces of Thailand, provinces (''changwat'') of Thailand and lies in the Isan region of Isan#Administrative divisions, upper n ...
,
Isan Northeast Thailand or Isan (Isan language, Isan/ th, อีสาน, ; lo, ອີສານ; also written as Isaan, Isarn, Issarn, Issan, Esan, or Esarn; from Pali ''īsānna'' or Sanskrit ईशान्य ''īśānya'' "northeast") consist ...
, Thailand) Dates are selected by village mediums and can take place anywhere between March and July. * National Small Business Week (
United States The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country Continental United States, primarily located in North America. It consists of 50 U.S. state, states, a Washington, D.C., ...

United States
): May 5 – 11 * National Hurricane Preparedness Week (
United States The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country Continental United States, primarily located in North America. It consists of 50 U.S. state, states, a Washington, D.C., ...

United States
): May 5 – 11 *
New Zealand Sign Language Week
New Zealand Sign Language Week
: May 6 – 12 * Green Office Week (
Britain Britain usually refers to: * United Kingdom The United Kingdom of Great Britain and Northern Ireland, commonly known as the United Kingdom (UK) or Britain,Usage is mixed. The Guardian' and Telegraph' use Britain as a synonym for the United ...

Britain
,
United States The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country Continental United States, primarily located in North America. It consists of 50 U.S. state, states, a Washington, D.C., ...

United States
): May 13 – 17 *
Walk Safely to School Day Image:Walk safely to school day.gif, 150px Walk Safely to School Day is an annual, national event in Australia in which primary school children are encouraged to walk or commute safely to school, an initiative of the Pedestrian Council of Australia ...
(
Australia Australia, officially the Commonwealth of Australia, is a Sovereign state, sovereign country comprising the mainland of the Australia (continent), Australian continent, the island of Tasmania, and numerous List of islands of Australia, sma ...

Australia
): May 17 * Emergency Medical Services Week (
United States The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country Continental United States, primarily located in North America. It consists of 50 U.S. state, states, a Washington, D.C., ...

United States
): May 19 – 25 *
Bike to Work Week Victoria Victoria is the capital city of the Provinces and territories of Canada, Canadian province of British Columbia, on the southern tip of Vancouver Island off Canada's Pacific Ocean, Pacific coast. The city has a population of 85,792, and the Grea ...
(May 27 – June 2)


Movable Western Christian observances, 2020 dates

Sunday after Divine Mercy Sunday: May 5 *
Jubilate SundayThe Fourth Sunday of Easter is the day that occurs three weeks after the Christianity, Christian celebration of Easter. Western Christianity Tridentine Catholicism (pre-1970) In the Tridentine Mass, historical Roman Rite of the Catholic Churc ...
Monday and Tuesday in the week following the third Sunday of Easter: May 6–7 *
Hocktide Hocktide, Hock tide or Hoke Day is a very old term used to denote the Monday and Tuesday in the second week after Easter. It was an English mediaeval In the history of Europe The history of Europe concerns itself with the discovery and ...
(
England England is a Countries of the United Kingdom, country that is part of the United Kingdom. It shares land borders with Wales to its west and Scotland to its north. The Irish Sea lies northwest of England and the Celtic Sea to the southwest. E ...

England
) Fourth Sunday after Easter: May 12 *
Cantate SundayImage:CantateDominoIntroit.jpg, upright=1.3, Incipit of the Gregorian chant introit for the fourth Sunday after Easter in the ''Liber Usualis''. The Fifth Sunday of Easter is the Sunday four weeks after the Christianity, Christian celebration of East ...
* Good Shepherd Sunday Fourth Friday after Easter: May 17 *
Store Bededag{{Infobox holiday , holiday_name = Store bededag , type = , image = , imagesize = , caption = , official_name = , nickname = Great Prayer Day , observedby = Denmark Denmark ( da, Danmark, ), officially the ...
(Denmark) Third Sunday of May: May 19 *Madonna dell'Udienza, Feast of Our Lady of the Audience Sunday preceding the Rogation days: May 26 *Rogation Sunday Monday, Tuesday, and Wednesday preceding Feast of the Ascension: May 27–29 *Minor Rogation days 39 days after Easter: May 30 *Feast of the Ascension **Vatertag, Father's Day (Germany) **Festa della Sensa (Venice) **Day of Prayer#Global Day of Prayer, Global Day of Prayer **Public holidays in Cameroon, Sheep Festival (Cameroon)


Movable Eastern Christian observances, 2020 dates

Wednesday after Pascha: May 1 * Bright Week, Bright Wednesday Thursday after Pascha: May 2 * Bright Week, Bright Thursday Friday after Pascha: May 3 * Bright Week, Bright Friday Saturday after Pascha: May 4 * Bright Week, Bright Saturday 8th day after Pascha: May 5 * Thomas Sunday 2nd Tuesday of Pascha, or 2nd Monday of Pascha, depending on region: May 6 or May 7 * Radonitsa (Russian Orthodox) 2nd Sunday following Pascha: May 12 * Pentecostarion#Sunday of the Myrrhbearers, Sunday of the Myrrhbearers 4th Sunday of Pascha: May 26 * Pentecostarion#Sunday of the Paralytic, Sunday of the Paralytic Wednesday after the Sunday of the Paralytic: May 29 * Mid-Pentecost


Last Friday in April to the first Sunday in May: April 26 – May 5

* Arbor Day, National Arbour Week (Ontario, Canada)


First Thursday: May 2

* Arbor Day (
Nova Scotia ) , image_map = Nova Scotia in Canada 2.svg , Label_map = yes , coordinates = , official_lang = English (''de facto'') , RegionalLang = French, Scots Gaelic , capital ...

Nova Scotia
, Canada) * National Day of Prayer (
United States The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country Continental United States, primarily located in North America. It consists of 50 U.S. state, states, a Washington, D.C., ...

United States
) * National Day of Reason (United States)


First Saturday: May 4

* Kentucky Derby (moved to September 5, 2020) * Free Comic Book Day * Green Up Day (Vermont,
United States The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country Continental United States, primarily located in North America. It consists of 50 U.S. state, states, a Washington, D.C., ...

United States
) * World Naked Gardening Day


=First Sunday: May 5

= *Mother's Day (Angola, Cape Verde, Hungary, Lithuania, Mozambique, Portugal, Spain) *World Laughter Day


First full week: May 5–11

* Teachers' Day, National Teacher Appreciation Week (
United States The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country Continental United States, primarily located in North America. It consists of 50 U.S. state, states, a Washington, D.C., ...

United States
) * North American Occupational Safety and Health Week


=Tuesday of First full week: May 4

= *Teachers' Day, National Teacher Appreciation Day (
United States The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country Continental United States, primarily located in North America. It consists of 50 U.S. state, states, a Washington, D.C., ...

United States
)


=Wednesday of first full week: May 8

= *Occupational Safety and Health Professional Day


Second week in May: May 5–11

* National Stuttering Awareness Week (
United States The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country Continental United States, primarily located in North America. It consists of 50 U.S. state, states, a Washington, D.C., ...

United States
)


First Tuesday: May 7

*World Asthma Day


Friday preceding Second Sunday in May: May 10

* Military Spouse Day (
United States The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country Continental United States, primarily located in North America. It consists of 50 U.S. state, states, a Washington, D.C., ...

United States
) * National Public Gardens Day (United States)


Saturday closest to May 10: May 11

*National Train Day (
United States The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country Continental United States, primarily located in North America. It consists of 50 U.S. state, states, a Washington, D.C., ...

United States
)


Second Saturday: May 8

*International Migratory Bird Day (Canada, the United States, Mexico, Central and South America, and the Caribbean) *Arbor Day, National Tree Planting Day (Mongolia)


Second Weekend: May 11–12

*National Mills Day, National Mills Weekend (United Kingdom) *World Migratory Bird Day


Second Sunday: May 9

* 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: May 6-12

*International Nurses Day, National Nursing Week (United States)


Third Weekend, including Friday: May 14-16

*Sanja Matsuri (Tokyo, Japan)


Third Friday: May 21

*Arbor Day (Prince Edward Island, Canada) *National Defense Transportation Day *Endangered species, Endangered Species Day (United States) *List of food days#May, National Pizza Party Day (United States)


Third Saturday: May 15

* 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: May 16

*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: May 24

* Victoria Day (Scotland)


Third Monday: May 17

*Discovery Day (Cayman Islands)


Monday on or before May 25: May 24

* National Patriots' Day (Quebec)


Last Monday preceding May 25: May 24

*
Victoria Day Victoria Day (french: Fête de la Reine, lit=Celebration of the Queen) is a federal Canadian public holiday celebrated on the last Monday preceding May 25. Initially in honour of Queen Victoria Victoria (Alexandrina Victoria; 24 May 1819 ...
(Canada)


May 24, or the nearest weekday if May 24 falls on a weekend: May 24

*Bermuda Day (Bermuda)


Saturday closest to May 30: May 29

*Armed Forces Day (Spain)


Last Weekend: May 29–30

*Kyiv Day (Kyiv)


Last Sunday: May 30

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


Last Monday: May 31

* Heroes' Day (Turks and Caicos Islands) *
Memorial Day Memorial Day (originally known as Decoration Day) is a federal holiday in the United States In the United States, a federal holiday is a calendar date that is recognized and designated by the federal government of the United States as a h ...
(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: May 26

*Multiple Sclerosis International Federation, World Multiple Sclerosis Day


Last Thursday: May 27

*Take a Girl Child to Work Day (South Africa)


Fixed observances in May

* April 29 to May 5 in Japan, which includes four different holidays, is called "Golden Week (Japan), Golden Week". Many workers have up to 10 days off. There is also 'May sickness', where new students or workers start to be tired of their new routine. (In Japan the school year and fiscal year start on April 1.) *
May 1 Events Pre-1600 * 305 – Diocletian Diocletian (; la, Gaius Aurelius Valerius Diocletianus; born Diocles; 22 December c. 244 – 3 December 311) was from 284 to 305. Born to a family of low status in , Diocletian rose through the ...
**Armed Forces Day (Mauritania) **Beltane (Ireland, Neopaganism) **Constitution Day (Argentina) **May Day, Lei Day (Hawaii,
United States The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country Continental United States, primarily located in North America. It consists of 50 U.S. state, states, a Washington, D.C., ...

United States
) **May Day (International observance) * May 2 **Dos de Mayo Uprising#Impact of the uprising, Anniversary of the Dos de Mayo Uprising (Holiday of the Region of Madrid, Community of Madrid, Spain) **Birth Anniversary of Third Druk Gyalpo (Bhutan) **Flag Day (Poland) **Indonesia National Education Day * May 3 **Constitution Day (Poland) **Constitution Memorial Day (Japan) **Roodmas **Sun Day (International observance, International) **World Press Freedom Day * May 4 **Anti-Bullying Day (United Nations) **Bird Day (
United States The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country Continental United States, primarily located in North America. It consists of 50 U.S. state, states, a Washington, D.C., ...

United States
) **Cassinga Day (Namibia) **Remembrance days in Slovakia, Death of Milan Rastislav Štefánik Day (Slovakia) **Greenery Day (Japan) **International Firefighters' Day **May Fourth Movement commemorations: ***Literary Day (Taiwan) ***Youth Day (China) **Remembrance Day for Martyrs and Disabled (Afghanistan) **Remembrance of the Dead (Netherlands) **Public holidays in Latvia, Restoration of Independence day (Latvia) **Star Wars Day (International observance) **GiveForward.com, World Give Day **List of festivals in Fiji, Youth Day (Fiji) * May 5 **Children's Day (Japan, Korea) **Cinco de Mayo **Constitution Day, Constitution Day (Kyrgyzstan) **Coronation Day (Thailand) **Europe Day in Europe (uncommon usage, largely replaced by May 9). **Feast of al-Khadr or Saint George (Palestinian people) **Indian Arrival Day (Guyana) **International Midwives' Day **Liberation Day (Denmark) **Liberation Day (Netherlands) **Lusophone, Lusophone Culture Day (Community of Portuguese Language Countries) **Martyrs' Day (Albania) **Patriots' Victory Day (Ethiopia) **Senior Citizens Day (Palau) **Tango no sekku (Japan) * May 6 **Public holidays in Gabon, Martyrs' Day (Gabon) **Martyrs' Day (Lebanon and Syria) **International No Diet Day **Teachers' Day (Jamaica) **The first day of Hıdırellez (Turkey) **St George's Day related observances (Eastern Orthodox Church): ***Army Day#Bulgaria, Day of Bravery, also known as ''Gergyovden'' (Bulgaria) ***Đurđevdan (Gorani people, Gorani, Romani people, Roma) ***Public holidays in Georgia, Police Day (Georgia) ***George's Day in Spring, Yuri's Day (Russian Orthodox Church) * May 7 **Defender of the Fatherland Day (Kazakhstan) **Dien Bien Phu Victory Day (Vietnam) **Radio Day (Russia, Bulgaria) * May 8 **Public holidays in Mexico, Miguel Hidalgo's birthday (Mexico) **Parents' Day (South Korea) **Time of Remembrance and Reconciliation for Those Who Lost Their Lives during the Second World War, continues to May 9 **Truman Day (Missouri, United States) **White Lotus Day (Theosophy (Blavatskian), Theosophy) **World Red Cross and Red Crescent Day **Veterans Day (Norway) **Victory in Europe Day, VE Day in Western Europe. In Eastern Europe it is celebrated on May 9. * May 9 **Scientology holidays, Anniversary of Dianetics (Church of Scientology) **Europe Day (European Union) **Liberation Day (Guernsey), commemorating the end of the German occupation of the Channel Islands during World War II. **Liberation Day (Jersey), commemorating the end of the German occupation of the Channel Islands during World War II. **Time of Remembrance and Reconciliation for Those Who Lost Their Lives during the Second World War, continued from May 8. **Victory Day (9 May), Victory Day observances, celebration of the Soviet Union victory over Nazi Germany (Public holidays in the Soviet Union, Soviet Union, Public holidays in Azerbaijan, Azerbaijan, Public holidays in Belarus, Belarus, Public holidays in Bosnia and Herzegovina, Bosnia and Herzegovina, Public holidays in Georgia, Georgia, Public holidays in Israel, Israel, Public holidays in Kazakhstan, Kazakhstan, Public holidays in Kyrgyzstan, Kyrgyzstan, Public holidays in Moldova, Moldova, Public holidays in Russia, Russia, Public holidays in Serbia, Serbia, Public holidays in Tajikistan, Tajikistan, Public holidays in Turkmenistan, Turkmenistan, Public holidays in Uzbekistan, Uzbekistan) **Victory Day over Nazism in World War II (Ukraine) **Victory and Peace Day (Armenia) marks both the capture of Shusha (1992) in the First Nagorno-Karabakh War, and the end of World War II. * May 10 **Children's Day (Maldives) **Confederate Memorial Day (North Carolina and South Carolina) **Constitution Day (Federated States of Micronesia) **Golden Spike, Golden Spike Day (1869 – Completion of the First Transcontinental Railroad – Promontory Summit, Utah) **Independence Day (Romania), celebrating the declaration of independence of Romania from the Ottoman Empire in 1877. **Liberation Day (Sark), commemorating the end of the German occupation of the Channel Islands during World War II. * May 11 **Pokhran-II#Legacy, National Technology Day (India) **List of U.S. states by date of admission to the Union, Statehood Day (Minnesota) **Human rights in Vietnam, Vietnam Human Rights Day (Vietnam) * May 12 **Public holidays in Georgia, Saint Andrea the First Day (Georgia (country)) **Flag flying days in Finland, Day of the Finnish Identity (Finland) **Chronic fatigue syndrome#Awareness day, International Myalgic Encephalomyelitis/Chronic Fatigue Syndrome Awareness Day **International Nurses Day * May 13 **Abbotsbury Garland Day (Dorset, England) **Heroes' Day (Romania) **Rotuma Day (Rotuma, Fiji) * May 14 **Hastings Banda's Birthday (Malawi) **First day of Izumo-taisha Shrine Grand Festival. (Izumo-taisha, Japan) **National Unification Day (Liberia) *May 15 **Beginning of Tourette Syndrome awareness month. It ends on June 15 **Army Day (Slovenia) **Constituent Assembly Day (Lithuania) **Independence Day (Paraguay) **International Day of Families **Nakba Day (Palestinian people, Palestinian communities) **Peace Officers Memorial Day (United States) **Republic Day (Lithuania) **Saint Ubaldo Day **Teachers' Day (Colombia, Mexico, South Korea) *May 16 **Christianity in Sudan, Martyrs of Sudan (Episcopal Church (USA)) **St Brendan Birthday & Feast day **Mass graves in Iraq, Mass Graves Day (Iraq) **National Day, declared by Salva Kiir Mayardit (South Sudan) **Teachers' Day (Malaysia) * May 17 **National Day Against Homophobia (Canada) **International Day Against Homophobia and Transphobia, International Day Against Homophobia, Transphobia and Biphobia, also known as IDAHOT **Public holidays in Malaysia, Birthday of the Raja (Perlis) **Children's Day (Norway) **Constitution Day (Nauru) **Galician Literature Day (Galicia (Spain)) **World Hypertension Day **World Information Society Day **Liberation Day (Democratic Republic of the Congo) **Navy Day#Argentina, Navy Day (Argentina) **Norwegian Constitution Day * May 18 **Baltic Fleet Day (Russia) **Battle of Las Piedras, Battle of Las Piedras Day (Uruguay) **Deportation of the Crimean Tatars, Day of Remembrance of Crimean Tatar genocide (Ukraine) **Flag and Universities Day (Haiti) **Independence Day (Somaliland) (List of states with limited recognition, unrecognized) **International Museum Day **Mullivaikkal Remembrance Day (Sri Lankan Tamil people, Sri Lankan Tamils) **Revival, Unity, and Poetry of Magtymguly Day (Turkmenistan) **Teacher's Day (Syria) **Victory Day (Sri Lanka) **World AIDS Vaccine Day * May 19 **Commemoration of Atatürk, Youth and Sports Day (Turkey, Northern Cyprus) **Greek genocide#Political, Greek Genocide Remembrance Day (Greece) **Ho Chi Minh, Hồ Chí Minh's Birthday (Vietnam) **Malcolm X Day (United States of America) **AIDS.gov, National Asian & Pacific Islander HIV/AIDS Awareness Day **Hepatitis Testing Day (United States) * May 20 **Day of Remembrance (Cambodia) **Emancipation Day (Florida) **European Maritime Day (European Council) **Independence Day (Cuba) **Independence Day, East Timor **Josephine Baker Day (National Association for the Advancement of Colored People, NAACP) **National Awakening Day (Indonesia) **National Day (Cameroon) **World Metrology Day * May 21 **Afro-Colombian Day (Colombia) **Circassian Day of Mourning (Circassians) **Armed Forces Day#Hungary, Day of Patriots and Military (Hungary) **Navy Day (Chile) **Saint Helena Day, celebrates the discovery of Saint Helena in 1502. **World Day for Cultural Diversity for Dialogue and Development (International observance, International) **One of the three festivals of Vejovis (Roman Empire) * May 22 **Abolitionism, Abolition Day (Martinique) **Harvey Milk Day (California) **International Day for Biological Diversity (International observance#May, International) **United States National Maritime Day, National Maritime Day (United States) **National Sovereignty Day (Haiti) **Republic Day (Sri Lanka) **Translation of the Relics of Saint Nicholas from Myra to Bari (Ukraine) **Unity Day (Yemen) **World Goth Day * May 23 **Constitution Day (Germany) **Labour Day (Jamaica) **Students' Day (Mexico) **World Turtle Day * May 24 ** Feast of Mary Help of Christians (Roman Catholicism) **Aldersgate Day/John Wesley, Wesley Day (Methodism) **Public holidays in Ecuador, Battle of Pichincha Day (Ecuador) **Commonwealth Day (Belize) **Independence Day (Eritrea) **Lubiri Memorial Day (Buganda) **Saints Cyril and Methodius Day (Eastern Orthodox Church) and its related observance: ***Bulgarian Education and Culture and Slavonic Literature Day (Bulgaria) ***Public holidays in North Macedonia, Saints Cyril and Methodius, Slavonic Enlighteners' Day (North Macedonia) * May 25 **Africa Day (African Union) **African Liberation Day (African Union) **Day of Youth **Geek Pride Day **Independence Day (Jordan) **Liberation Day (Lebanon), Liberation Day (Lebanon) **May Revolution (or Revolución de Mayo), a national holiday in Argentina **International Missing Children's Day **Last bell (Russia, post-Soviet countries) **Liberation Day (Lebanon) **National Day (Argentina) **National Missing Children's Day (United States) **National Tap Dance Day (United States) **Towel Day * May 26 **Frederik, Crown Prince of Denmark, Crown Prince's Birthday (Denmark) **Independence Day (Guyana) **Independence Day (Georgia) **Mother's Day (Poland) **National Day of Healing (Australia) **National Paper Airplane Day (United States) * May 27 **Armed Forces Day (Nicaragua) **Children's Day (Nigeria) **Mother's Day (Bolivia) **Navy Day (Japan) **Politics of Guadeloupe, Slavery Abolition Day (Guadeloupe, Saint Barthélemy, Collectivity of Saint Martin, Saint Martin) **World MS Day **Start of National Reconciliation Week (Australia) * May 28 **Armed Forces Day (Croatia) **Downfall of the Derg Day (Ethiopia) **Flag Day (Philippines) (Display of the flag in all places until June 12 is encouraged) **Independence Day (Armenia) **Republic Day (Nepal) **Transcaucasian Democratic Federative Republic, TDFR Republic Day **Youm-e-Takbir (Pakistan) * May 29 **Armed Forces Day, Army Day (Argentina) **International Day of United Nations Peacekeepers (International observance, International) **Oak Apple Day (England), and its related observance: ***Castleton Garland Day (Castleton, Derbyshire, Castleton) **List of U.S. states by date of admission to the Union, Statehood Day (Rhode Island and Wisconsin) **Veterans Day (Sweden) **World Digestive Health Day * May 30 **Anguilla Day (Anguilla) **Canary Islands Day (Spain) **Indian Arrival Day (Trinidad and Tobago) **Lod Massacre Remembrance Day (Puerto Rico) **Mother's Day (Nicaragua) **Parliament Day (Croatia) * May 31 **Royal Brunei Land Forces, Anniversary of Royal Brunei Malay Regiment (Brunei) **Public holidays in Spain#Regional holidays, Castile–La Mancha Day (Castile-La Mancha) **Visitation (Christian), Visitation of Mary (Western Christianity) **World No Tobacco Day (International observance, International)


See also

* List of historical anniversaries *


References

{{Authority control May, Months, *05