Adoption of the Gregorian Calendar: Pope Gregory XIII introduced the Gregorian calendar, replacing the Julian calendar to correct inaccuracies in the calculation of leap years and better align the calendar year with the solar year.
1803
Marbury v. Madison: The US Supreme Court established the principle of judicial review, giving courts the power to declare laws unconstitutional and solidifying the judiciary’s role in the American system of checks and balances.
1868
Civil Registration in Baden: The Grand Duchy of Baden became the first German state to officially record births, marriages, and deaths, creating a formal civil registration system for legal and administrative purposes.
1918
Estonia’s Independence: Estonia declared independence from Russia, marking the foundation of the modern Estonian state following the collapse of the Russian Empire during World War I.
1980
Zimbabwe’s Independence: Zimbabwe officially gained independence from colonial rule (formerly Rhodesia), ending decades of minority-rule governance and establishing majority rule under a democratic government.
2026
AI-Enabled E-ICU in India: Union Health Minister Shri J.P. Nadda inaugurated the AI-Enabled E-ICU Command Centre at Yashoda Medicity, Ghaziabad, enhancing technology-driven critical care services through artificial intelligence, real-time monitoring, and improved patient management.




