28 May

International Day of Action for Women's Health & Reproductive Rights
On May 28, the Center for Reproductive Rights joins health and women’s rights advocates from around the world in commemorating the International Day of Action for Women’s Health.

The Center also calls on governments to ensure access to sexual and reproductive health services, including contraception, which is essential to improve women and adolescent girls’ health.

“Guaranteeing access to affordable, acceptable and good quality contraceptive services and information, free from coercion, discrimination and violence, is critical for achieving gender equality and ensuring that women can participate as full members of society,” said Lilian Sepúlveda, Deputy Director of the International Legal Program at the Center for Reproductive Rights.

May 28
Armenia
Republic Day, independence from the Transcaucasian Democratic Federative Republic 1918

Azerbaijan
Republic Day, independence from the Transcaucasian Democratic Federative Republic 1918

Events
585 BC – A solar eclipse occurs, as predicted by Greek philosopher and scientist Thales, while Alyattes is battling Cyaxares in the Battle of the Eclipse, leading to a truce. This is one of the cardinal dates from which other dates can be calculated.
1503 – James IV of Scotland and Margaret Tudor are married according to a Papal Bull by Pope Alexander VI. A Treaty of Everlasting Peace between Scotland and England signed on that occasion results in a peace that lasts ten years.
1533 – The Archbishop of Canterbury Thomas Cranmer declares the marriage of King Henry VIII of England to Anne Boleyn valid.
1588 – The Spanish Armada, with 130 ships and 30,000 men, sets sail from Lisbon heading for the English Channel. (It will take until May 30 for all ships to leave port).
1644 – Bolton Massacre by Royalist troops under the command of the Earl of Derby.
1754 – French and Indian War: in the first engagement of the war, Virginia militia under 22-year-old Lieutenant Colonel George Washington defeat a French reconnaissance party in the Battle of Jumonville Glen in what is now Fayette County in southwestern Pennsylvania.
1830 – President Andrew Jackson signs the Indian Removal Act which relocates Native Americans.
1892 – In San Francisco, California, John Muir organizes the Sierra Club.
1905 – Russo-Japanese War: The Battle of Tsushima ends with the destruction of the Russian Baltic Fleet by Admiral Togo Heihachiro and the Imperial Japanese Navy.
1918 – The Azerbaijan Democratic Republic and the Democratic Republic of Armenia declare their independence.
1926 – 28th May 1926 coup d'état: Ditadura Nacional is established in Portugal to suppress the unrest of the First Republic.
1930 – The Chrysler Building in New York City officially opens.
1932 – In the Netherlands, construction of the Afsluitdijk is completed and the Zuiderzee bay is converted to the freshwater IJsselmeer.
1934 – Near Callander, Ontario, the Dionne quintuplets are born to Oliva and Elzire Dionne; they will be the first quintuplets to survive infancy.
1936 – Alan Turing submits On Computable Numbers for publication.
1937 – The Golden Gate Bridge in San Francisco, California, is officially opened by President Franklin D. Roosevelt in Washington, D.C., who pushes a button signaling the start of vehicle traffic over the span.
1940 – World War II: Belgium surrenders to Germany to end the Battle of Belgium.
1940 – World War II: Norwegian, French, Polish and British forces recapture Narvik in Norway. This is the first allied infantry victory of the War.
1942 – World War II: in retaliation for the assassination of Reinhard Heydrich, Nazis in Czechoslovakia kill over 1,800 people.
1951 – British radio comedy programme The Goon Show was broadcast on BBC for the first time.
1952 – The women of Greece are given the right to vote.
1958 – Cuban Revolution: Fidel Castro's 26 July movement, heavily reinforced by Frank Pais Militia, overwhelm an army post in El Uvero.
1961 – Peter Benenson's article The Forgotten Prisoners is published in several internationally read newspapers. This will later be thought of as the founding of the human rights organization Amnesty International.
1964 – The Palestine Liberation Organization is formed.
1974 – Northern Ireland's power-sharing Sunningdale Agreement collapses following a general strike by loyalists.
1975 – Fifteen West African countries sign the Treaty of Lagos, creating the Economic Community of West African States.
1977 – In Southgate, Kentucky, the Beverly Hills Supper Club is engulfed in fire, killing 165 people inside.
1979 – Constantine Karamanlis signs the full treaty of the accession of Greece with the European Economic Community.
1982 – Falklands War: British forces defeat the Argentines at the Battle of Goose Green.
1987 – 19-year-old West German pilot Mathias Rust evades Soviet Union air defenses and lands a private plane in the Red Square in Moscow. He is immediately detained and will not be released until August 3, 1988.
1991 – The capital city of Addis Ababa, falls to the Ethiopian People's Revolutionary Democratic Front, ending both the Derg regime in Ethiopia and the Ethiopian Civil War.
1993 – Eritrea and Monaco join the United Nations.
1995 – The Russian town of Neftegorsk is hit by a 7.6 magnitude earthquake that kills at least 2,000 people, half of the total population.
1996 – U.S. President Bill Clinton's former business partners in the Whitewater land deal, James McDougal and Susan McDougal, and the Governor of Arkansas Jim Guy Tucker, are convicted of fraud.
1998 – Nuclear testing: Pakistan responds to a series of nuclear tests by India with five of its own codenamed Chagai-I, prompting the United States, Japan, and other nations to impose economic sanctions. Pakistan celebrates Youm-e-Takbir annually.
1999 – In Milan, Italy, after 22 years of restoration work, Leonardo da Vinci's masterpiece The Last Supper is put back on display.
2002 – NATO declares Russia a limited partner in the Western alliance.
2002 – The Mars Odyssey finds signs of large ice deposits on the planet Mars.
2003 – Peter Hollingworth becomes the first Governor-General of Australia to resign his office as a result of criticism of his conduct.
2004 – The Iraqi Governing Council chooses Ayad Allawi, a longtime anti-Saddam Hussein exile, as prime minister of Iraq's interim government.
2008 – The first meeting of the Constituent Assembly of Nepal formally declares Nepal a republic, ending the 240-year reign of the Shah dynasty.
2010 – In West Bengal, India, a train derailment and subsequent collision kills 141 passengers.

Holidays and observances

Armed Forces Day (Croatia)
Christian Feast Day:
Bernard of Menthon
Germain of Paris
Lanfranc
Margaret Pole
William of Gellone
May 28 (Eastern Orthodox liturgics)
Downfall of the Derg Day, a National Day. (Ethiopia)
Flag Day (Philippines)
Republic Day (Nepal)
Republic Day, celebrates the declaration of independence of the Democratic Republic of Armenia and the Azerbaijan Democratic Republic from the Transcaucasian Democratic Federative Republic in 1918. (Azerbaijan and Armenia)