Democracy
The Chinese authorities declare martial law in the face of pro-democracy demonstrations, setting the scene for the Tiananmen Square massacre.
20 Mayıs — Tarihte Bugün
Geçmişte bugün yaşanan olaylar, doğumlar, ölümler ve tatiller. Türkçe ve İngilizce Vikipedi kaynaklı kapsamlı arşiv.
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Olaylar
20 Mayıs 2026 · İngilizce Vikipedi · 65 kayıt · Sayfa 2 / 7
Radio y Televisión Martí
Radio Martí, part of the Voice of America service, begins broadcasting to Cuba.
HIV
First publications of the discovery of the HIV virus that causes AIDS in the journal Science by a team of French scientists including Françoise Barré-Sinoussi, Jean-Claude Chermann, and Luc Montagnier.
Church Street, Pretoria bombing
Church Street bombing: A car bomb planted by UMkhonto we Sizwe explodes on Church Street in South Africa's capital, Pretoria, killing 19 people and injuring 217 others.
1980 Quebec referendum
In a referendum in Quebec, the population rejects, with 60% of the vote, a government proposal to move towards independence from Canada.
Chuknagar massacre
In the Chuknagar massacre, Pakistani forces massacre thousands, mostly Bengali Hindus.
Battle of Hamburger Hill
The Battle of Hamburger Hill in Vietnam ends.
Popular Movement of the Revolution
The Popular Movement of the Revolution political party is established in the Democratic Republic of the Congo.
Pakistan International Airlines Flight 705
One hundred twenty-one people are killed when Pakistan International Airlines Flight 705 crashes at Cairo International Airport.
Discovery of cosmic microwave background radiation
Discovery of the cosmic microwave background radiation by Robert Woodrow Wilson and Arno Penzias.