Christian feast day: April 17 (Eastern Orthodox liturgics)
April 16 - Eastern Orthodox liturgical calendar - April 18
Christian feast day: April 17 (Eastern Orthodox liturgics)
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April 16 - Eastern Orthodox liturgical calendar - April 18
Christian feast day: April 17 (Eastern Orthodox liturgics)
Independence Day is Syria's National Day commemorating the evacuation of the last French soldier at the end of the French mandate of Syria on 17 April 1946 after Syria's proclamati…
Evacuation Day (Syria), celebrates the recognition of the independence of Syria from France in 1946
The flag of American Samoa consists of a red-edged white triangle pointing towards the hoist charged with a bald eagle clutching a war club and fly-whisk, with dark blue upper and …
Flag Day (American Samoa)
The World Federation of Hemophilia (WFH) is an international non-profit organization dedicated to improving the lives of people with hemophilia and other inherited bleeding disorde…
World Hemophilia Day
Malbec World Day is an annual observance celebrated on April 17, to commemorate the day on which President Domingo Faustino Sarmiento of Argentina officially made it his mission to…
Malbec World Day
Anthusa of Constantinople commonly known as Saint Anthusa of Constantinople and in Orthodox usage as Saint Anthousa the Younger is a saint venerated in the Eastern Orthodox Church …
Christian feast day: Anthusa of Constantinople
Cyril VI of Constantinople, lay name Konstantinos Serpentzoglou, was the Ecumenical Patriarch of Constantinople between the years 1813 and 1818.
Christian feast day: Cyril VI of Constantinople (Eastern Orthodox Church)
Eleutherius, also written as Eleutherus, Eleuterus and Eleftherios ; and his mother Antia, or Anthia are venerated as Christian saints and martyrs in Albania, Greece and Cyprus, an…
Christian feast day: Eleutherius and Antia
Galdino della Sala, Galdinus or Galdimus, was a Roman Catholic saint from Milan in northern Italy. He was a cardinal elevated in 1165 and he also served as Archbishop of Milan fro…
Christian feast day: Galdino della Sala
Beatification is a recognition accorded by the Catholic Church of a deceased person's entrance into Heaven and capacity to intercede on behalf of individuals who pray in their name…
Christian feast day: Blessed Marie of the Incarnation
Saint Molaise of Leighlin, also Laisrén or Laserian, was an early Irish saint and abbot of Lethglenn or Leithglenn, now Old Leighlin in County Carlow, who is supposed to have lived…
Christian feast day: Molaise of Leighlin
Saint Perfectus (Santo Perfecto) (died 18 April 850) was one of the Martyrs of Córdoba whose martyrdom was recorded by Saint Eulogius in the Memoriale sanctorum.
Christian feast day: Perfectus
Beatification is a recognition accorded by the Catholic Church of a deceased person's entrance into Heaven and capacity to intercede on behalf of individuals who pray in their name…
Christian feast day: Blessed Savina Petrilli
April 17 - Eastern Orthodox liturgical calendar - April 19
Christian feast day: April 18 (Eastern Orthodox liturgics)
Holidays in Poland are regulated by the Non-working Days Act of 18 January 1951. The Act, as amended in 2010, currently defines fourteen public holidays.
Coma Patients' Day (Poland)
Friendship Day is an international holiday dedicated to friendship and the celebration of it. Its date varies greatly by country and region. The idea of a World Friendship Day was …
Friend's Day (Brazil)
An Armed Forces Day, alongside its branch-specific variants often referred to as Army or Soldier's Day, Navy or Sailor's Day, and Air Force or Aviator's Day, is a holiday dedicated…
Army Day (Iran)
The following is a list of holidays in Zimbabwe:
Independence Day (Zimbabwe)
The International Day for Monuments and Sites, also known as World Heritage Day, is an international observance held on April 18 each year around the world with different types of …
International Day For Monuments and Sites
Japanese patent law is based on the first-to-file principle and is mainly given force by the Patent Act of Japan. Article 2 defines an invention as "the highly advanced creation o…
Invention Day (Japan)
The Days of Military Honour are special memorable dates in the Russian Armed Forces dedicated to the most outstanding victories won by Russia. Some of these dates are state holiday…
Victory over the Teutonic Knights in the Battle of the Ice (Russia; Julian Calendar)
The International Amateur Radio Union (IARU) is an international confederation of national organisations that allows a forum for common matters of concern to amateur radio operator…
World Amateur Radio Day