Category
page 2May observances
Siblings Day
holiday honouring relationships of siblings
World Metrology Day
world day to celebrate the International System of Units on the anniversary of the signing of the Metre Convention
Aoi Matsuri
traditional Japanese Festival in Kyoto
International Midwives' Day
day to recognize and honor midwives
Akshaya Tritiya
Auspicious day of Hindu Tradition
Secular Games
an ancient Roman celebration held at the completion of various eras or on important anniversaries
World Asthma Day
World Day
Agonalia
An Agonalia or Agonia was an obscure archaic religious observance celebrated in ancient Rome several times a year, in honor of various divinities. Its institution, like that of other religious rites and ceremonies, was attributed to Numa Pompilius, the semi-legendary second king of Rome. Ancient calendars indicate that it was celebrated regularly on January 9, May 21, and December 11.
Liberation Day
Liberation Day in the Netherlands is celebrated each year on May 5th, to mark the end of the occupation by Nazi Germany during World War II.
Đurđevdan
Slavic religious holiday. valiant of Saint George's Day. Slavic folk Christianity
Youth Day
day dedicated to the youths of a country
Engineer's Day
Engineers Day all over the world
World Turtle Day
annual festival to encourage protection and knowledge of turtles and tortoises
National Masturbation Day
Universal festival
Greenery Day
national holiday in Japan
Independence Day
public holiday in Georgia commemorating the 1918 declaration of independence
King's Official Birthday
public holiday in Commonwealth realms
Maharashtra Day
public holiday in the Indian state of Maharashtra commemorating its formation
Remembrance of the Dead
Dutch day of remembrance of war dead
Dano
Korean festival
Radio Day
national holiday in Russia on 7 May
Victoria Day
Canadian public holiday
Royal Ploughing Ceremony
traditional rite in some Asian countries
Constitution Memorial Day
national holiday in Japan
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Ambarvalia
thumb|right|Relief depicting the three animals sacrificed at the Ambarvalia as part of a suovetaurilia (a sow, a sheep, and a bull)
Ambarvalia was a Roman agricultural fertility rite, involving animal sacrifices and held on 29 May in honor of Ceres, Bacchus and Dea Dia. However, the exact timing could vary since Ambarvalia were "feriae conceptivae" - a festival not bound to a fixed date.
Labour Day
annual holiday
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Sanja Matsuri
Shinto festival in Japan
International Firefighters' Day
annual observance to honor firefighters
Feast of the Sacred Heart
Solemnity in the Catholic Church
Time of Remembrance and Reconciliation for Those Who Lost Their Lives during the Second World War
world day
Thargelia
Thargelia () was one of the chief Athenian festivals in honour of the Delian Apollo and Artemis, held on their birthdays, the 6th and 7th of the month Thargelion (about May 24 and May 25).
Statehood Day
public holiday in Croatia
Cassinga Day
public holiday in Namibia
International Missing Children's Day
world day
Liberation Day
public holiday in various countries to commemorate a liberation
Vyshivanka Day
international holiday of Ukrainian ethnic embroidered clothes
May devotions to the Blessed Virgin Mary
Marian devotions held in the Catholic Church in May
Baby jumping
Spanish festival
Victory Day over Nazism in World War II
a former national holiday in Ukraine commemorating victory in World War II
Independence Day
public holiday in Azerbaijan
Mercuralia
Mercuralia is a Roman celebration known also as the "Festival of Mercury". Mercury (Greek counterpart: Hermes) was the god of merchants and commerce, among other things. On May 15 merchants would sprinkle their heads, their ships and merchandise, and their businesses with water taken from the well at Porta Capena.
Anti-Bullying Day
day celebrated on various dates across the world. The event originated in Canada
Commemoration of Atatürk, Youth and Sports Day
annual Turkish national holiday
Bird Day
the first holiday in the United States dedicated to the celebration of birds, and more events

Homowo Festival
thumb|A street in Accra. Many people from nearby neighborhoods and the surrounding area flock to the city center in order to attend the celebration of the Homowo Festival, the annual main festival of the Ga, around 1900.
thumb|Teshie Homowo Festival Ban on Singing & Drumming Ritual Ceremony.
thumb|Homowo festival rituals.
alt=A woman wearing a white cloth carries a pot while clad in green vines walks alongside two men wearing white while also pooring libation|thumb|Nungua Homowo Festival Painting.
Homowo is a festival celebrated by the Ga people of Ghana in the Greater Accra Region. The festiv
Sankranti
Sankranti () refers to the transmigration of the sun from one zodiac to another in Indian astronomy. In Saurmana varsha (Hindu Solar year), there are twelve Sankrantis corresponding with twelve months of a year. The Sankrantis can be broadly classified into four main categories: Ayan (Solstice), Vishuva (Equinox), Vishupadi and Shadshitimukhi sankrantis.
Each Sankranti is marked as the beginning of a month in the sidereal solar calendars followed in South Indian states: Andhra Pradesh, Telangana, Tamil Nadu, Kerala, Karnataka; Himalayan states: Jammu region, Himachal Pradesh, Uttarakhand, Nort
Rosalia
festival of roses in the Roman Empire
National Sorry Day
annual event

Arrhephoria
thumb|A recreation of the Statue of Athena that would have been found inside the Parthenon.
thumb|Recreation of the west pediment of the Parthenon.

Kaamatan
Kaamatan (; ) is a form of harvest festival celebrated on 30 and 31 May annually in the state of Sabah in Malaysia.

Kanyarkali
thumb|A kanyarkali Performance

Finding of the True Cross
Helena finding the cross| thumb
Roodmas (from Old English rood "rod", "cross" and mas, Mass; similar to the etymology of Christmas) is a name for the celebration of the Feast of the Cross. It has been applied to both historical commemoration on May 3 and September 14. It commemorates the finding by Saint Helena of the True Cross in Jerusalem in 326.
Border Guards Day
Holiday in former Soviet Union
Tubilustrium
In ancient Rome the month of March was the traditional start of the campaign season, and the Tubilustrium was a ceremony to make the army fit for war. The ceremony involved sacred trumpets called tubae.
Martyrs' Day
Wikimedia disambiguation page
Day of Slavonic Alphabet, Bulgarian Enlightenment and Culture
public holiday in Bulgaria & several other Slavic countries

Global Accessibility Awareness Day
The purpose of GAAD is to get everyone talking, thinking and learning about digital (web, software, mobile, etc.) access/inclusion and people with different disabilities.
World Internet Day
Day to promote the importance of information and communications technology
International Day of Light
annual celebration on 16 May